libpqtypes - libpqtypes: added specifier format string caching to

Log Message:
-----------
added specifier format string caching to improve performance (+25%): bipasses the parsing and type lookup stages of
putfand getf 

Modified Files:
--------------
    libpqtypes:
        ChangeLog (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/ChangeLog.diff?r1=1.1&r2=1.2)
    libpqtypes/src:
        events.c (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/events.c.diff?r1=1.3&r2=1.4)
        exec.c (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/exec.c.diff?r1=1.5&r2=1.6)
        handler.c (r1.8 -> r1.9)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/handler.c.diff?r1=1.8&r2=1.9)
        libpqtypes-int.h (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/libpqtypes-int.h.diff?r1=1.4&r2=1.5)
        param.c (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/param.c.diff?r1=1.5&r2=1.6)