add really really trivial #line support, where #line now makes every 
location below it report as coming from the #line location.  For example,
with:

#line 92 "foo.h"
#warning blarg!
#warning blarg!

we now emit:

foo.h:92:2: warning: #warning blarg!
#warning blarg!
 ^
foo.h:92:2: warning: #warning blarg!
#warning blarg!
 ^



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63709 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed