pgsql: Control openjade draft-mode by variable DRAFT, rather than

Log Message:
-----------
Control openjade draft-mode by variable DRAFT, rather than whether the
version tag is 'devel'.

Modified Files:
--------------
pgsql/doc/src/sgml:
Makefile (r1.92 -> r1.93)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/Makefile.diff?r1=1.92&r2=1.93)