Log Message:
-----------
On OS X, assume that an empty-string result for nl_langinfo(CODESET)
means UTF-8. Per examination of /usr/share/locale in 10.4.10.
Modified Files:
--------------
pgsql/src/port:
chklocale.c (r1.1 -> r1.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/chklocale.c?r1=1.1&r2=1.2)