pgsql: Revise psql pattern-matching switches as per discussion.

Log Message:
-----------
Revise psql pattern-matching switches as per discussion.  The rule is now
to process all inclusion switches then all exclusion switches, so that the
behavior is independent of switch ordering.
Use of -T does not cause non-table objects to be suppressed.  And
the patterns are now interpreted the same way psql's \d commands do it,
rather than as pure regex commands; this allows for example -t schema.tab
to do what it should have been doing all along.  Re-enable the --blobs
switch to do something useful, ie, add back blobs into a dump they were
otherwise suppressed from.

Modified Files:
--------------
    pgsql/doc/src/sgml/ref:
        pg_dump.sgml (r1.89 -> r1.90)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_dump.sgml.diff?r1=1.89&r2=1.90)
    pgsql/src/bin/pg_dump:
        common.c (r1.93 -> r1.94)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/common.c.diff?r1=1.93&r2=1.94)
        pg_dump.c (r1.452 -> r1.453)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dump.c.diff?r1=1.452&r2=1.453)
        pg_dump.h (r1.129 -> r1.130)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dump.h.diff?r1=1.129&r2=1.130)