Log Message:
-----------
Fix assign_datestyle() so that it doesn't misleadingly complain about
'conflicting datestyle specifications' for input that's actually only
redundant, such as SET DATESTYLE = MDY, MDY. Per recent gripe.
Modified Files:
--------------
pgsql/src/backend/commands:
variable.c (r1.107 -> r1.108)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/variable.c.diff?r1=1.107&r2=1.108)