pgsql: Provide a --no-locale option for pg_regress and a corresponding

Log Message:
-----------

Provide a --no-locale option for pg_regress and a corresponding NOLOCALE=1
setting for the regression makefile, allowing Windows users to force locale
settings since Windows does not get its locale from the environment.

Per Petr Jelinek.

Modified Files:
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pgsql/src/test/regress:
GNUmakefile (r1.52 -> r1.53)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/GNUmakefile.diff?r1=1.52&r2=1.53)
pg_regress.sh (r1.60 -> r1.61)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/pg_regress.sh.diff?r1=1.60&r2=1.61)