pgsql: Simplify CREATE TEXT SEARCH CONFIGURATION by eliminating the

Log Message:
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Simplify CREATE TEXT SEARCH CONFIGURATION by eliminating the separate
'with map' parameter; as things now stand there's really not much point
in specifying a config-to-copy if you don't copy its map.  Also, use
COPY instead of TEMPLATE as the key word for a config-to-copy, so as
to avoid confusion with text search templates.  Per discussion; the
just-committed reference page for the command already describes it
this way.

Modified Files:
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    pgsql/src/backend/commands:
        tsearchcmds.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/tsearchcmds.c?r1=1.1&r2=1.2)