libpqtypes - libpqtypes: Made PQtypesRegister a function to hide

Log Message:
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Made PQtypesRegister a function to hide PGEventProc address, windows func addresses differ from an application and its
loadedDLLs.  Removed PQtypesEventProc API function, no longer needed. 

Modified Files:
--------------
    libpqtypes/src:
        events.c (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/events.c.diff?r1=1.4&r2=1.5)
        exec.c (r1.6 -> r1.7)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/exec.c.diff?r1=1.6&r2=1.7)
        handler.c (r1.9 -> r1.10)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/handler.c.diff?r1=1.9&r2=1.10)
        libpqtypes-int.h (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/libpqtypes-int.h.diff?r1=1.5&r2=1.6)
        libpqtypes.h (r1.10 -> r1.11)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/libpqtypes.h.diff?r1=1.10&r2=1.11)
        param.c (r1.6 -> r1.7)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/param.c.diff?r1=1.6&r2=1.7)
        regression-test.c (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/regression-test.c.diff?r1=1.4&r2=1.5)