Log Message:
-----------
Add comment about rationale for continuing to use C library functions
instead of src/timezone for timestamping log entries.
Modified Files:
--------------
pgsql-server/src/backend/utils/error:
elog.c (r1.140 -> r1.141)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/utils/error/elog.c.diff?r1=1.140&r2=1.141)