libpqtypes - libpqtypes: Continued work on PQsendf and PQsendvf.

Log Message:
-----------
Continued work on PQsendf and PQsendvf.  Added prototypes to libpqtypes.h and man page documentation.  Regression
testedchanges as well.  Updated change log. 

Modified Files:
--------------
    libpqtypes:
        ChangeLog (r1.34 -> r1.35)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/ChangeLog?r1=1.34&r2=1.35)
    libpqtypes/docs/man3:
        PQexecf.3 (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/docs/man3/PQexecf.3?r1=1.3&r2=1.4)
        PQspecPrepare.3 (r1.6 -> r1.7)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/docs/man3/PQspecPrepare.3?r1=1.6&r2=1.7)
    libpqtypes/src:
        exec.c (r1.21 -> r1.22)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/exec.c?r1=1.21&r2=1.22)
        libpqtypes.h (r1.22 -> r1.23)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/libpqtypes.h?r1=1.22&r2=1.23)