bizgres - bizgres: Add administration commands for resource queues.

Log Message:
-----------
Add administration commands for resource queues.

The queues themselves are managed by CREATE|ALTER RESOURCE QUEUE xxx
ACTIVE THRESHOLD x1 COST THRESHOLD x2 plus DROP RESOURCE QUEUE xxx.
.
There are additions to the various ROLE commands to manage the associated
queue - CREATE|ALTER ROLE RESOURCE QUEUE xxx.

The new keywords have been added to the unreserved list.

Included in the check in are a some code tidy-ups, although several C++ style
comments remain, and will be cleaned up in a subsequent commit (it seemed a
good time to get a pretty much full functional queuing module into the
repository!)

Modified Files:
--------------
bizgres/postgresql/src/backend/commands:
Makefile (r1.1.1.1.30.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/backend/commands/Makefile.diff?r1=1.1.1.1.30.1&r2=1.2)
user.c (r1.1.1.2.2.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/backend/commands/user.c.diff?r1=1.1.1.2.2.1&r2=1.2)
bizgres/postgresql/src/backend/parser:
gram.y (r1.1.1.2.2.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/backend/parser/gram.y.diff?r1=1.1.1.2.2.1&r2=1.2)
keywords.c (r1.1.1.2.2.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/backend/parser/keywords.c.diff?r1=1.1.1.2.2.1&r2=1.2)
bizgres/postgresql/src/backend/tcop:
pquery.c (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/backend/tcop/pquery.c.diff?r1=1.2&r2=1.3)
utility.c (r1.1.1.2.2.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/backend/tcop/utility.c.diff?r1=1.1.1.2.2.1&r2=1.2)
bizgres/postgresql/src/backend/utils/resscheduler:
README (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/backend/utils/resscheduler/README.diff?r1=1.3&r2=1.4)
resqueue.c (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/backend/utils/resscheduler/resqueue.c.diff?r1=1.2&r2=1.3)
resscheduler.c (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/backend/utils/resscheduler/resscheduler.c.diff?r1=1.2&r2=1.3)
bizgres/postgresql/src/include/catalog:
indexing.h (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/include/catalog/indexing.h.diff?r1=1.2&r2=1.3)
pg_resqueue.h (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/include/catalog/pg_resqueue.h.diff?r1=1.1&r2=1.2)
bizgres/postgresql/src/include/nodes:
nodes.h (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/include/nodes/nodes.h.diff?r1=1.3&r2=1.4)
parsenodes.h (r1.1.1.2.2.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/include/nodes/parsenodes.h.diff?r1=1.1.1.2.2.1&r2=1.2)
bizgres/postgresql/src/include/utils:
resscheduler.h (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/bizgres/bizgres/postgresql/src/include/utils/resscheduler.h.diff?r1=1.2&r2=1.3)