pgsql: postgres -boot would print the wrong program name in event of a

Log Message:
-----------
postgres -boot would print the wrong program name in event of a
failure in SelectConfigFiles(). Cosmetic issue, but ...

Modified Files:
--------------
pgsql/src/backend/bootstrap:
bootstrap.c (r1.197 -> r1.198)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/bootstrap/bootstrap.c.diff?r1=1.197&r2=1.198)