pgsql: Remove the -d and -D options of pg_dump and pg_dumpall.

Log Message:
-----------
Remove the -d and -D options of pg_dump and pg_dumpall. The functionality
is still available, but you must now write the long equivalent --inserts
or --column-inserts. This change is made to eliminate confusion with the
use of -d to specify a database name in most other Postgres client programs.
Original patch by Greg Mullane, modified per subsequent discussion.

Modified Files:
--------------
pgsql/doc/src/sgml/ref:
pg_dump.sgml (r1.112 -> r1.113)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_dump.sgml?r1=1.112&r2=1.113)
pg_dumpall.sgml (r1.78 -> r1.79)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_dumpall.sgml?r1=1.78&r2=1.79)
pgsql/src/bin/pg_dump:
pg_dump.c (r1.529 -> r1.530)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dump.c?r1=1.529&r2=1.530)
pg_dumpall.c (r1.119 -> r1.120)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dumpall.c?r1=1.119&r2=1.120)