For Lexer's isAt[Start/End]OfMacroExpansion add an out parameter for the macro
start/end location.

It is commonly needed after calling the function; with this way we avoid
recalculating it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148479 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed