pgsql: Don't use LC_MESSAGES value on WIN32, since it doesn't work.

Log Message:
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Don't use LC_MESSAGES value on WIN32, since it doesn't work.
Magnus Hagander

Modified Files:
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pgsql/src/bin/initdb:
initdb.c (r1.63 -> r1.64)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/initdb/initdb.c.diff?r1=1.63&r2=1.64)