Use full path file names in generate.stamp.list.

The full path file names are important for Visual Studio 10, which
apparently changes the current working directory when running
custom command rules.

Source/cmGlobalVisualStudio8Generator.cxx

@@ -154,8 +154,6 @@ void cmGlobalVisualStudio8Generator::AddCheckTarget()
     stampFile += "/";
     stampFile += cmake::GetCMakeFilesDirectoryPostSlash();
     stampFile += "generate.stamp";
-    stampFile = generators[0]->Convert(stampFile.c_str(),
-                                       cmLocalGenerator::START_OUTPUT);
     fout << stampFile << "\n";
     stamps.push_back(stampFile);
     }