* NEWS: Bison-generated C parsers now use the _ macro to

translate strings.
* data/yacc.c (_) [!defined _]: New macro.
All English strings wrapped inside this macro.
* doc/bison.texinfo (Bison Parser): Document _.
* po/POTFILES.in: Include src/parse-gram.c, since it now
includes translateable strings that parse-gram.y doesn't.

po/POTFILES.in

@@ -4,6 +4,7 @@ src/files.c
 src/getargs.c
 src/gram.c
 src/main.c
+src/parse-gram.c
 src/parse-gram.y
 src/print.c
 src/reader.c