pgsql: Rename the new CREATE DATABASE options to set collation and ctype

Log Message:
-----------
Rename the new CREATE DATABASE options to set collation and ctype into
LC_COLLATE and LC_CTYPE, per discussion on pgsql-hackers.

Modified Files:
--------------
pgsql/doc/src/sgml:
charset.sgml (r2.92 -> r2.93)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/charset.sgml?r1=2.92&r2=2.93)
keywords.sgml (r2.23 -> r2.24)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/keywords.sgml?r1=2.23&r2=2.24)
pgsql/doc/src/sgml/ref:
create_database.sgml (r1.50 -> r1.51)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/create_database.sgml?r1=1.50&r2=1.51)
pgsql/src/backend/commands:
dbcommands.c (r1.219 -> r1.220)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/dbcommands.c?r1=1.219&r2=1.220)
pgsql/src/backend/parser:
gram.y (r2.661 -> r2.662)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/gram.y?r1=2.661&r2=2.662)
pgsql/src/bin/pg_dump:
pg_dump.c (r1.533 -> r1.534)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dump.c?r1=1.533&r2=1.534)
pg_dumpall.c (r1.121 -> r1.122)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dumpall.c?r1=1.121&r2=1.122)
pgsql/src/bin/scripts:
createdb.c (r1.33 -> r1.34)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/scripts/createdb.c?r1=1.33&r2=1.34)
pgsql/src/include/parser:
kwlist.h (r1.1 -> r1.2)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/parser/kwlist.h?r1=1.1&r2=1.2)
pgsql/src/interfaces/ecpg/preproc:
ecpg.trailer (r1.6 -> r1.7)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/ecpg.trailer?r1=1.6&r2=1.7)