pgsql: Install .mo files for NLS as <program>-<version>.mo when building

Log Message:
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Install .mo files for NLS as <program>-<version>.mo when building with MSVC
as well. Same change as made earlier for autoconf builds.

Per Hiroshi Inoue.

Modified Files:
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pgsql/src/tools/msvc:
Install.pm (r1.31 -> r1.32)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/tools/msvc/Install.pm?r1=1.31&amp;r2=1.32)