Don't allow #include (and its friends #import, #include_next and

#__include_macros) in the arguments of a function-style macro. Directives in the
arguments of such macros have undefined behaviour, and GCC does not correctly
support these cases. In some situations, this can lead to better diagnostics.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146765 91177308-0d34-0410-b5e6-96231b3b80d8