libpqtypes - libpqtypes: Several bug fixes, add PQregisterComposites,

Log Message:
-----------
Several bug fixes, add PQregisterComposites, PQregisterSubClass, PQregisterUserDefinedTypes.  Deprecated
PQregisterTypeHandler(now just a wrapper to new PQregisterXXX functions), updated change log with details, bumped
libpqtypesversioning to 1.4 due to API changes 

Modified Files:
--------------
    libpqtypes:
        ChangeLog (r1.39 -> r1.40)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/ChangeLog?r1=1.39&r2=1.40)
        configure.ac (r1.22 -> r1.23)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/configure.ac?r1=1.22&r2=1.23)
    libpqtypes/src:
        events.c (r1.9 -> r1.10)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/events.c?r1=1.9&r2=1.10)
        handler.c (r1.15 -> r1.16)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/handler.c?r1=1.15&r2=1.16)
        libpqtypes-int.h (r1.15 -> r1.16)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/libpqtypes-int.h?r1=1.15&r2=1.16)
        libpqtypes.h (r1.25 -> r1.26)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/libpqtypes.h?r1=1.25&r2=1.26)
        misc.c (r1.7 -> r1.8)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/misc.c?r1=1.7&r2=1.8)
        regression-test.c (r1.21 -> r1.22)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/regression-test.c?r1=1.21&r2=1.22)
        spec.c (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/spec.c?r1=1.5&r2=1.6)