pgsql: Adjust ts_debug's output as per my proposal of yesterday: show

Log Message:
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Adjust ts_debug's output as per my proposal of yesterday: show the
active dictionary and its output lexemes as separate columns, instead
of smashing them into one text column, and lowercase the column names.
Also, define the output rowtype using OUT parameters instead of a
composite type, to be consistent with the other built-in functions.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        func.sgml (r1.402 -> r1.403)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml?r1=1.402&r2=1.403)
        textsearch.sgml (r1.22 -> r1.23)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/textsearch.sgml?r1=1.22&r2=1.23)
    pgsql/src/backend/catalog:
        system_views.sql (r1.46 -> r1.47)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/system_views.sql?r1=1.46&r2=1.47)
    pgsql/src/include/catalog:
        catversion.h (r1.434 -> r1.435)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/catalog/catversion.h?r1=1.434&r2=1.435)