The upstream tarball for this application has been altered to remove 
(unneeded) binary-only components. The list of files removed is as follows:

        external/monomac/samples/macdoc/lib/AgilityPack.dll
        external/monomac/samples/macdoc/lib/Ionic.Zip.dll
        external/monomac/samples/macdoc/lib/monodoc.dll
        external/maccore/tools/docfixer/AgilityPack.dll
        external/maccore/tools/docfixer/Ionic.Zip.dll
        external/maccore/tools/docfixer/Mono.Cecil.dll
        external/cecil/Test/libs/nunit-2.5.10/nunit.core.dll
        external/cecil/Test/libs/nunit-2.5.10/nunit.core.interfaces.dll
        external/cecil/Test/libs/nunit-2.5.10/nunit.framework.dll
        external/cecil/Test/Resources/assemblies/boxedoptarg.dll
        external/cecil/Test/Resources/assemblies/decsec1-xml.dll
        external/cecil/Test/Resources/assemblies/libres.dll
        external/cecil/Test/Resources/assemblies/delay-signed.dll
        external/cecil/Test/Resources/assemblies/marshal.dll
        external/cecil/Test/Resources/assemblies/cscgpbug.dll
        external/cecil/Test/Resources/assemblies/cppcli.dll
        external/cecil/Test/Resources/assemblies/libhello.dll
        external/cecil/Test/Resources/assemblies/noblob.dll
        external/cecil/Test/Resources/assemblies/decsec-xml.dll
        external/cecil/Test/Resources/assemblies/decsec-att.dll
        external/cecil/Test/Resources/assemblies/empty-decsec-att.dll
        external/cecil/rocks/Test/Resources/assemblies/decsec-xml.dll
        external/cecil/rocks/Test/Resources/assemblies/decsec-att.dll
        external/guiunit/tools/nant/bin/NAnt.CompressionTasks.dll
        external/guiunit/tools/nant/bin/NAnt.NUnit.dll
        external/guiunit/tools/nant/bin/NDoc.Documenter.NAnt.dll
        external/guiunit/tools/nant/bin/NAnt.VSNetTasks.dll
        external/guiunit/tools/nant/bin/NAnt.NUnit1Tasks.dll
        external/guiunit/tools/nant/bin/log4net.dll
        external/guiunit/tools/nant/bin/NAnt.VisualCppTasks.dll
        external/guiunit/tools/nant/bin/NAnt.Core.dll
        external/guiunit/tools/nant/bin/NAnt.Win32Tasks.dll
        external/guiunit/tools/nant/bin/NAnt.SourceControlTasks.dll
        external/guiunit/tools/nant/bin/NAnt.NUnit2Tasks.dll
        external/guiunit/tools/nant/bin/NAnt.MSNetTasks.dll
        external/guiunit/tools/nant/bin/extensions/common/2.0/NAnt.MSBuild.dll
        external/guiunit/tools/nant/bin/extensions/common/4.0/NAnt.MSBuild.dll
        external/guiunit/tools/nant/bin/lib/common/neutral/NUnitCore.dll
        external/guiunit/tools/nant/bin/lib/common/neutral/netDumbster.dll
        external/guiunit/tools/nant/bin/lib/common/neutral/ICSharpCode.SharpCvsLib.dll
        external/guiunit/tools/nant/bin/lib/common/neutral/NDoc.Documenter.Msdn.dll
        external/guiunit/tools/nant/bin/lib/common/neutral/NDoc.Core.dll
        external/guiunit/tools/nant/bin/lib/common/neutral/ICSharpCode.SharpCvsLib.Console.dll
        external/guiunit/tools/nant/bin/lib/common/neutral/ICSharpCode.SharpZipLib.dll
        external/guiunit/tools/nant/bin/lib/common/neutral/NDoc.ExtendedUI.dll
        external/guiunit/tools/nant/bin/lib/common/2.0/nunit.core.dll
        external/guiunit/tools/nant/bin/lib/common/2.0/nunit.core.interfaces.dll
        external/guiunit/tools/nant/bin/lib/common/2.0/nunit.util.dll
        external/guiunit/tools/nant/bin/lib/common/2.0/nunit-console-runner.dll
        external/guiunit/tools/nant/bin/lib/common/2.0/nunit.framework.dll
        external/guiunit/tools/nant/bin/NAnt.DotNetTasks.dll
        external/mono-tools/gendarme/wix/Libraries/ICSharpCode.SharpZipLib.dll
        external/mono-tools/windoc/WinDoc/lib/monodoc.dll
        external/mono-tools/windoc/WinDoc/lib/ICSharpCode.SharpZipLib.dll
        external/Newtonsoft.Json/Tools/NUnit/framework/nunit.framework.dll
        external/Newtonsoft.Json/Tools/NUnit/framework/nunit.mocks.dll
        external/Newtonsoft.Json/Tools/NUnit/lib/nunit-gui-runner.dll
        external/Newtonsoft.Json/Tools/NUnit/lib/nunit.core.dll
        external/Newtonsoft.Json/Tools/NUnit/lib/nunit.uiexception.dll
        external/Newtonsoft.Json/Tools/NUnit/lib/nunit.core.interfaces.dll
        external/Newtonsoft.Json/Tools/NUnit/lib/nunit.util.dll
        external/Newtonsoft.Json/Tools/NUnit/lib/nunit-console-runner.dll
        external/Newtonsoft.Json/Tools/NUnit/lib/nunit.uikit.dll
        external/Newtonsoft.Json/Src/Lib/NUnit/DotNet/nunit.framework.dll
        external/Newtonsoft.Json/Src/Lib/NUnit/Compact/NUnitLite.dll
        external/Newtonsoft.Json/Src/Lib/NUnit/Silverlight/nunit.framework.dll
        external/xwt/Testing/libs/nunit.core.dll
        external/xwt/Testing/libs/nunit.core.interfaces.dll
        external/xwt/Testing/libs/nunit.util.dll
        external/xwt/Testing/libs/nunit-console-runner.dll
        external/xwt/Testing/libs/nunit.framework.dll
        external/ikvm/bin/ICSharpCode.SharpZipLib.dll
        external/mono-addins/support/ICSharpCode.SharpZipLib.dll
        external/mdtestharness/tests/nunit.uiexception.tests.dll
        external/mdtestharness/tests/nunit.uikit.tests.dll
        external/mdtestharness/tests/mock-assembly.dll
        external/mdtestharness/tests/nunit.framework.tests.dll
        external/mdtestharness/tests/test-assembly.dll
        external/mdtestharness/tests/nunit.mocks.tests.dll
        external/mdtestharness/tests/nunit-gui.tests.dll
        external/mdtestharness/tests/nonamespace-assembly.dll
        external/mdtestharness/tests/test-utilities.dll
        external/mdtestharness/tests/nunit-editor.tests.dll
        external/mdtestharness/tests/nunit.core.tests.dll
        external/mdtestharness/tests/nunit.util.tests.dll
        external/mdtestharness/tests/nunit-console.tests.dll
        external/mdtestharness/tests/nunit.framework.dll
        external/mdtestharness/pnunit.tests.dll
        external/mdtestharness/framework/pnunit.framework.dll
        external/mdtestharness/framework/nunit.framework.dll
        external/mdtestharness/framework/nunit.mocks.dll
        external/mdtestharness/pnunit.framework.dll
        external/mdtestharness/lib/NSubstitute.dll
        external/mdtestharness/lib/log4net.dll
        external/mdtestharness/lib/nunit-gui-runner.dll
        external/mdtestharness/lib/nunit.core.dll
        external/mdtestharness/lib/Rhino.Mocks.dll
        external/mdtestharness/lib/nunit.uiexception.dll
        external/mdtestharness/lib/nunit.core.interfaces.dll
        external/mdtestharness/lib/nunit.util.dll
        external/mdtestharness/lib/nunit-console-runner.dll
        external/mdtestharness/lib/nunit.uikit.dll
        external/mdtestharness/nunit.framework.dll
        src/addins/NUnit/lib/nunit.core.dll
        src/addins/NUnit/lib/nunit.core.interfaces.dll
        src/addins/NUnit/lib/nunit.util.dll
        src/addins/NUnit/lib/nunit.framework.dll
        src/addins/AspNet/MonoDevelop.AspNet.Mvc/lib/System.Web.Razor.dll
        src/addins/AspNet/MonoDevelop.AspNet.Mvc/lib/System.Web.WebPages.Razor.dll
        src/addins/AspNet/MonoDevelop.AspNet.Mvc/lib/System.Web.Mvc.dll
        src/addins/AspNet/MonoDevelop.AspNet.Mvc/lib/System.Web.WebPages.dll
        external/cecil/symbols/mdb/Test/Resources/assemblies/hello.exe
        external/cecil/symbols/pdb/Test/Resources/assemblies/VBConsApp.exe
        external/cecil/symbols/pdb/Test/Resources/assemblies/test.exe
        external/cecil/symbols/pdb/Test/Resources/assemblies/fsapp.exe
        external/cecil/Test/Resources/assemblies/hello.ia64.exe
        external/cecil/Test/Resources/assemblies/hello.x86.exe
        external/cecil/Test/Resources/assemblies/hello1.exe
        external/cecil/Test/Resources/assemblies/fptr.exe
        external/cecil/Test/Resources/assemblies/iterator.exe
        external/cecil/Test/Resources/assemblies/gifaceref.exe
        external/cecil/Test/Resources/assemblies/switch.exe
        external/cecil/Test/Resources/assemblies/hello.exe
        external/cecil/Test/Resources/assemblies/hello.x64.exe
        external/cecil/Test/Resources/assemblies/mma.exe
        external/cecil/Test/Resources/assemblies/catch.exe
        external/cecil/Test/Resources/assemblies/hello.anycpu.exe
        external/cecil/Test/Resources/assemblies/pinvoke.exe
        external/cecil/Test/Resources/assemblies/hellow.exe
        external/cecil/Test/Resources/assemblies/varargs.exe
        external/guiunit/tools/nant/bin/NAnt.exe
        external/guiunit/tools/nant/bin/scvs.exe
        external/guiunit/tools/nant/bin/lib/common/2.0/nunit-console.exe
        external/Newtonsoft.Json/Tools/7-zip/7za.exe
        external/Newtonsoft.Json/Tools/NUnit/nunit-x86.exe
        external/Newtonsoft.Json/Tools/NUnit/nunit-agent-x86.exe
        external/Newtonsoft.Json/Tools/NUnit/nunit.exe
        external/Newtonsoft.Json/Tools/NUnit/nunit-console.exe
        external/Newtonsoft.Json/Tools/NUnit/nunit-agent.exe
        external/Newtonsoft.Json/Tools/NUnit/nunit-console-x86.exe
        external/Newtonsoft.Json/Tools/NuGet/NuGet.exe
        external/mdtestharness/nunit-x86.exe
        external/mdtestharness/nunit-agent-x86.exe
        external/mdtestharness/nunit-editor.exe
        external/mdtestharness/nunit.exe
        external/mdtestharness/pnunit-launcher.exe
        external/mdtestharness/nunit-console.exe
        external/mdtestharness/nunit-agent.exe
        external/mdtestharness/nunit-console-x86.exe
        external/mdtestharness/pnunit-agent.exe
        build/MacOSX/render.exe

To create your own copy of this modified tarball, use the "get-orig-source" 
rule in the debian/rules makefile.
