python - be: Move some utility routines to tupledesc.c

Log Message:
-----------
Move some utility routines to tupledesc.c

Modified Files:
--------------
be/include/pypg:
utils.h (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/include/pypg/utils.h.diff?r1=1.2&r2=1.3)
tupledesc.h (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/include/pypg/tupledesc.h.diff?r1=1.3&r2=1.4)
be/src:
utils.c (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/utils.c.diff?r1=1.4&r2=1.5)
tupledesc.c (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/tupledesc.c.diff?r1=1.3&r2=1.4)