Thread: pgsql: Change default build to release, to be consistent with unix

Log Message:
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Change default build to release, to be consistent with unix build.
Make it possible to set the default from builenv.bat.

Per request from Dave Page

Modified Files:
--------------
    pgsql/doc/src/sgml:
        install-win32.sgml (r1.38 -> r1.39)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/install-win32.sgml.diff?r1=1.38&r2=1.39)
    pgsql/src/tools/msvc:
        build.bat (r1.7 -> r1.8)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/msvc/build.bat.diff?r1=1.7&r2=1.8)