gcc/:
PR c/28800
* c-parser.c (c_parser_translation_unit): Warn for empty
translation unit, not empty source file.

gcc/testsuite/:
PR c/28800
* gcc.dg/empty-source-2.c: Adjust for warning message.
* gcc.dg/empty-source-3.c: Likewise.
* gcc.dg/pack-test-2.c: Adjust comment.
* gcc.dg/pragma-ep-2.c: Likewise.
* gcc.dg/pragma-re-2.c: Likewise.
* gcc.dg/va-arg-2.c: Likewise.

From-SVN: r132690