Attached patch fixes (well, at least a bit of) Rake build. In
particular, this patch fixes get_case_sensitive_path to actually work.
Current code does p.downcase.to_s == filename, which assumes filename
is already downcased, but filename is from *.csproj and it actually is
not, so at least it should be p.downcase == filename.downcase. Current
code also does not deal with directory names differing in case.
Looks good!
JD