Fix for NLS in pgport

I saw Peter's commit to allow NLS lookups from libpgport functions.
Here is the change to pg_ctl/nls.mk:

< GETTEXT_FILES := pg_ctl.c

> GETTEXT_FILES := pg_ctl.c ../../port/exec.c

Peter, do you have to know the C file used by pg_ctl to make these
adjustments? This seems pretty hard to do and maintain. Do your tools
do checks to make sure all the nls.mk files are properly modified? Is
there a cleaner way to do this like putting all the strings in single C
file and including that somehow?

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073