Check in the pristine copy of ICU 4.6...

icu46/source/tools/gensprep/gensprep.vcxproj.filters

Index: icu46/source/tools/gensprep/gensprep.vcxproj.filters
===================================================================
--- icu46/source/tools/gensprep/gensprep.vcxproj.filters	(revision 0)
+++ icu46/source/tools/gensprep/gensprep.vcxproj.filters	(revision 0)
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{bb521e6b-d70a-4efd-9399-408729059da6}</UniqueIdentifier>
+      <Extensions>cpp;c;cxx;rc;def;r;odl;idl;hpj;bat</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{837c7f4e-341d-4455-aa1e-f6ff7a03b065}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{a80f327a-7fb8-4737-8bd9-0f4b26c2c344}</UniqueIdentifier>
+      <Extensions>ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="gensprep.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="store.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="gensprep.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>