Thread: pgsql: Support "" for thousands separator and plus sign in to_char(),

Log Message:
-----------
Support "" for thousands separator and plus sign in to_char(), per
report from French Debian user.  psql already handles "" fine.

Modified Files:
--------------
    pgsql/src/backend/utils/adt:
        formatting.c (r1.104 -> r1.105)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/formatting.c.diff?r1=1.104&r2=1.105)