libpqtypes - libpqtypes: Modified the PQspecPrepare interface to work

Log Message:
-----------
Modified the PQspecPrepare interface to work off prepared names. Names are referenced in putf and getf spec format strings using $name. $name must be used alone.

Modified Files:
--------------
libpqtypes/docs/man3:
PQspecPrepare.3 (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/docs/man3/PQspecPrepare.3?r1=1.1&r2=1.2)
libpqtypes/src:
exec.c (r1.15 -> r1.16)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/exec.c?r1=1.15&r2=1.16)
libpqtypes-int.h (r1.14 -> r1.15)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/libpqtypes-int.h?r1=1.14&r2=1.15)
libpqtypes.h (r1.20 -> r1.21)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/libpqtypes.h?r1=1.20&r2=1.21)
param.c (r1.17 -> r1.18)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/param.c?r1=1.17&r2=1.18)
regression-test.c (r1.17 -> r1.18)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/regression-test.c?r1=1.17&r2=1.18)
spec.c (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/spec.c?r1=1.1&r2=1.2)