pgsql: Fix bug when localized to_char() day or month names were

Log Message:
-----------
Fix bug when localized to_char() day or month names were incorectly
trnasformed to lower or upper string.

Backpatch to 8.2.X.

Pavel Stehule

Tags:
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REL8_2_STABLE

Modified Files:
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pgsql/src/backend/utils/adt:
formatting.c (r1.116.2.1 -> r1.116.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/formatting.c.diff?r1=1.116.2.1&r2=1.116.2.2)
oracle_compat.c (r1.67 -> r1.67.2.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/oracle_compat.c.diff?r1=1.67&r2=1.67.2.1)