Documentation cleanup:
* Removed docs for Lexer::makeFileCharRange from Lexer.cpp, as they're in
  the header file;
* Reworked the documentation for SkipBlockComment so that it doesn't confuse
  Doxygen's comment parsing;
* Added another summary with \brief markup.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158618 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed