Normalize line endings in IWYU output before attempting assertions.
LLVM commit r199057 causes llvm::errs() to print CRLF instead of LF on Windows. Normalize all tool output to LF.


git-svn-id: http://include-what-you-use.googlecode.com/svn/trunk@513 812d1f90-f944-d88a-411a-122bdc93e1ea