Fix FileMatcher bug around trailing slashes
Fix FileMatcher bug around trailing slashes

Fixes #917
There was a trailing slash missmatch between two parts of code that have
never been put together until now

Microsoft/msbuild,Microsoft/msbuild,mono/msbuild,sean-gilliam/msbuild,rainersigwald/msbuild,AndyGerlicher/msbuild,chipitsine/msbuild,jeffkl/msbuild,sean-gilliam/msbuild,cdmihai/msbuild,rainersigwald/msbuild,mono/msbuild,AndyGerlicher/msbuild,cdmihai/msbuild,chipitsine/msbuild,rainersigwald/msbuild,mono/msbuild,sean-gilliam/msbuild,chipitsine/msbuild,rainersigwald/msbuild,Microsoft/msbuild,cdmihai/msbuild,AndyGerlicher/msbuild,chipitsine/msbuild,sean-gilliam/msbuild,mono/msbuild,jeffkl/msbuild,AndyGerlicher/msbuild,Microsoft/msbuild,jeffkl/msbuild,cdmihai/msbuild,jeffkl/msbuild