Thread: pgsql: Improve wording of error message when a postgresql.conf setting

Log Message:
-----------
Improve wording of error message when a postgresql.conf setting is
ignored because it can only be set at server start.  In particular,
hiding the main reason in the detail message was suboptimal.

Modified Files:
--------------
    pgsql/src/backend/utils/misc:
        guc-file.l (r1.60 -> r1.61)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc-file.l?r1=1.60&r2=1.61)
        guc.c (r1.517 -> r1.518)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc.c?r1=1.517&r2=1.518)