python - be: Remove PyPgCall keywords.

Log Message:
-----------
Remove PyPgCall keywords.

This had been going unused for some time, and was likely to continue to be
unused, so it might as well be removed.

Modified Files:
--------------
be/include/pypg:
call.h (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/include/pypg/call.h.diff?r1=1.7&r2=1.8)
be/src:
call.c (r1.11 -> r1.12)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/call.c.diff?r1=1.11&r2=1.12)
function.c (r1.16 -> r1.17)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/function.c.diff?r1=1.16&r2=1.17)
pl.c (r1.31 -> r1.32)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/pl.c.diff?r1=1.31&r2=1.32)
be/src/call:
function.c (r1.11 -> r1.12)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/call/function.c.diff?r1=1.11&r2=1.12)
pl.c (r1.18 -> r1.19)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/call/pl.c.diff?r1=1.18&r2=1.19)
portal.c (r1.12 -> r1.13)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/call/portal.c.diff?r1=1.12&r2=1.13)
trigger.c (r1.10 -> r1.11)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/call/trigger.c.diff?r1=1.10&r2=1.11)