Proposal to Enable/Disable Index using ALTER INDEX

Applied patch to 'doc/src/sgml/catalogs.sgml' cleanly.
Applied patch to 'doc/src/sgml/indices.sgml' cleanly.
Applied patch to 'doc/src/sgml/ref/alter_index.sgml' cleanly.
Applied patch to 'doc/src/sgml/ref/create_index.sgml' cleanly.
Applied patch to 'src/backend/bootstrap/bootparse.y' cleanly.
Applied patch to 'src/backend/catalog/index.c' cleanly.
Applied patch to 'src/backend/commands/indexcmds.c' cleanly.
Applied patch to 'src/backend/commands/tablecmds.c' cleanly.
Applied patch to 'src/backend/optimizer/util/plancat.c' cleanly.
Applied patch to 'src/backend/parser/gram.y' cleanly.
Applied patch to 'src/backend/parser/parse_utilcmd.c' cleanly.
Applied patch to 'src/backend/utils/adt/ruleutils.c' cleanly.
Applied patch to 'src/backend/utils/cache/lsyscache.c' cleanly.
Applied patch to 'src/backend/utils/cache/relcache.c' cleanly.
Applied patch to 'src/bin/pg_dump/pg_dump.c' cleanly.
Applied patch to 'src/bin/pg_dump/pg_dump.h' cleanly.
Applied patch to 'src/bin/pg_dump/t/002_pg_dump.pl' cleanly.
Applied patch to 'src/bin/psql/describe.c' cleanly.
Applied patch to 'src/bin/psql/tab-complete.in.c' cleanly.
Applied patch to 'src/include/catalog/catversion.h' with conflicts.
Applied patch to 'src/include/catalog/index.h' with conflicts.
Applied patch to 'src/include/catalog/pg_index.h' cleanly.
Applied patch to 'src/include/nodes/parsenodes.h' cleanly.
Applied patch to 'src/include/parser/kwlist.h' cleanly.
Applied patch to 'src/include/utils/lsyscache.h' cleanly.
Applied patch to 'src/test/modules/test_ddl_deparse/Makefile' cleanly.
Falling back to direct application...
Applied patch to 'src/test/modules/test_ddl_deparse/meson.build' cleanly.
Falling back to direct application...
Applied patch to 'src/test/modules/test_ddl_deparse/test_ddl_deparse.c' cleanly.
Applied patch to 'src/test/regress/expected/create_index.out' cleanly.
Applied patch to 'src/test/regress/sql/create_index.sql' cleanly.
U src/include/catalog/catversion.h
U src/include/catalog/index.h