For PR351:

For PR351:
* Make the OutputC and OutputAsm functions work with sys::Path for the output
  file name instead of using std::string.
* Get rid of extraneous "toString" calls.
* Change "removeFile" to sys::Path::destroyFile()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19000 91177308-0d34-0410-b5e6-96231b3b80d8