pgsql: Allow ALTER TABLE ...

Log Message:
-----------
Allow ALTER TABLE ... ALTER CONSTRAINT ... RENAME

Joachim Wieland

Modified Files:
--------------
    pgsql/doc/src/sgml:
        ddl.sgml (r1.52 -> r1.53)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ddl.sgml.diff?r1=1.52&r2=1.53)
    pgsql/doc/src/sgml/ref:
        alter_index.sgml (r1.6 -> r1.7)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/alter_index.sgml.diff?r1=1.6&r2=1.7)
        alter_table.sgml (r1.82 -> r1.83)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/alter_table.sgml.diff?r1=1.82&r2=1.83)
    pgsql/src/backend/catalog:
        pg_constraint.c (r1.28 -> r1.29)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/pg_constraint.c.diff?r1=1.28&r2=1.29)
        pg_depend.c (r1.17 -> r1.18)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/pg_depend.c.diff?r1=1.17&r2=1.18)
    pgsql/src/backend/commands:
        alter.c (r1.15 -> r1.16)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/alter.c.diff?r1=1.15&r2=1.16)
    pgsql/src/backend/parser:
        gram.y (r2.526 -> r2.527)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/gram.y.diff?r1=2.526&r2=2.527)
    pgsql/src/backend/tcop:
        utility.c (r1.250 -> r1.251)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/tcop/utility.c.diff?r1=1.250&r2=1.251)
    pgsql/src/include/catalog:
        dependency.h (r1.18 -> r1.19)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/catalog/dependency.h.diff?r1=1.18&r2=1.19)
        pg_constraint.h (r1.19 -> r1.20)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/catalog/pg_constraint.h.diff?r1=1.19&r2=1.20)
    pgsql/src/test/regress/expected:
        alter_table.out (r1.90 -> r1.91)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/alter_table.out.diff?r1=1.90&r2=1.91)
    pgsql/src/test/regress/sql:
        alter_table.sql (r1.52 -> r1.53)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/alter_table.sql.diff?r1=1.52&r2=1.53)