Documentation cleanup:
* Added \file, \brief and \verbatim...\endverbatim markup, particularly around
  documentation of subset of the grammars that are being parsed.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158628 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed