Log Message:
-----------
Move code that places LOG error level between ERROR and PANIC into new
function is_log_level_output(), for code clarity.
Modified Files:
--------------
pgsql/src/backend/utils/error:
elog.c (r1.179 -> r1.180)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/error/elog.c.diff?r1=1.179&r2=1.180)