pgsql: Remove bits* typedefs.

Remove bits* typedefs.

In addition to removing the bits8, bits16, and bits32 typedefs,
this commit replaces all uses with uint8, uint16, or uint32. bits*
provided little benefit beyond establishing the intent of the
variable, and they were inconsistently used for that purpose.
Third-party code should instead use the corresponding uint*
typedef.

Suggested-by: Andres Freund <andres(at)anarazel(dot)de>
Reviewed-by: Álvaro Herrera <alvherre(at)kurilemu(dot)de>
Reviewed-by: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Reviewed-by: Robert Haas <robertmhaas(at)gmail(dot)com>
Reviewed-by: Michael Paquier <michael(at)paquier(dot)xyz>
Reviewed-by: Peter Eisentraut <peter(at)eisentraut(dot)org>
Reviewed-by: Melanie Plageman <melanieplageman(at)gmail(dot)com>
Reviewed-by: Dagfinn Ilmari Mannsåker <ilmari(at)ilmari(dot)org>
Discussion: https://postgr.es/m/absbX33E4eaA0Ity%40nathan

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/bab2f27eaaad77f799ecc224f9e11b09adb07d5a

Modified Files
--------------
contrib/dblink/dblink.c | 2 +-
contrib/pageinspect/gistfuncs.c | 2 +-
contrib/pageinspect/heapfuncs.c | 16 +++----
contrib/postgres_fdw/deparse.c | 2 +-
doc/src/sgml/fdwhandler.sgml | 4 +-
src/backend/access/brin/brin_tuple.c | 20 ++++----
src/backend/access/common/heaptuple.c | 16 +++----
src/backend/access/common/indextuple.c | 12 ++---
src/backend/access/common/reloptions.c | 28 +++++------
src/backend/access/spgist/spgutils.c | 10 ++--
src/backend/catalog/index.c | 6 +--
src/backend/catalog/indexing.c | 2 +-
src/backend/catalog/objectaddress.c | 12 ++---
src/backend/commands/indexcmds.c | 4 +-
src/backend/commands/subscriptioncmds.c | 8 ++--
src/backend/commands/tablecmds.c | 2 +-
src/backend/commands/vacuum.c | 4 +-
src/backend/executor/execExprInterp.c | 8 ++--
src/backend/executor/execIndexing.c | 2 +-
src/backend/executor/execReplication.c | 4 +-
src/backend/executor/execTuples.c | 2 +-
src/backend/executor/nodeModifyTable.c | 2 +-
src/backend/foreign/foreign.c | 4 +-
src/backend/nodes/gen_node_support.pl | 3 +-
src/backend/postmaster/bgworker.c | 4 +-
src/backend/postmaster/syslogger.c | 2 +-
src/backend/utils/activity/pgstat_backend.c | 2 +-
src/backend/utils/adt/array_userfuncs.c | 10 ++--
src/backend/utils/adt/arrayfuncs.c | 68 +++++++++++++-------------
src/backend/utils/adt/format_type.c | 4 +-
src/backend/utils/adt/misc.c | 2 +-
src/backend/utils/adt/regproc.c | 4 +-
src/backend/utils/adt/ruleutils.c | 2 +-
src/backend/utils/adt/varbit.c | 74 ++++++++++++++---------------
src/backend/utils/adt/varlena.c | 2 +-
src/backend/utils/fmgr/funcapi.c | 2 +-
src/backend/utils/init/postinit.c | 2 +-
src/bin/pg_basebackup/pg_createsubscriber.c | 2 +-
src/bin/psql/tab-complete.in.c | 4 +-
src/bin/scripts/vacuumdb.c | 4 +-
src/bin/scripts/vacuuming.h | 2 +-
src/include/access/htup_details.h | 6 +--
src/include/access/itup.h | 6 +--
src/include/access/reloptions.h | 14 +++---
src/include/access/tupmacs.h | 8 ++--
src/include/c.h | 8 ----
src/include/catalog/index.h | 8 ++--
src/include/commands/cluster.h | 2 +-
src/include/commands/vacuum.h | 6 +--
src/include/common/jsonapi.h | 2 +-
src/include/executor/executor.h | 2 +-
src/include/executor/instrument_node.h | 2 +-
src/include/foreign/foreign.h | 4 +-
src/include/funcapi.h | 2 +-
src/include/miscadmin.h | 2 +-
src/include/nodes/parsenodes.h | 2 +-
src/include/port/pg_bitutils.h | 8 ++--
src/include/postmaster/syslogger.h | 2 +-
src/include/replication/reorderbuffer.h | 2 +-
src/include/replication/walsender_private.h | 2 +-
src/include/utils/array.h | 10 ++--
src/include/utils/arrayaccess.h | 2 +-
src/include/utils/builtins.h | 2 +-
src/include/utils/pgstat_internal.h | 2 +-
src/include/utils/regproc.h | 4 +-
src/include/utils/ruleutils.h | 2 +-
src/include/utils/varbit.h | 6 +--
src/pl/plpython/plpy_typeio.c | 8 ++--
src/port/pg_bitutils.c | 4 +-
src/port/pg_popcount_aarch64.c | 16 +++----
src/port/pg_popcount_x86.c | 14 +++---
src/test/modules/worker_spi/worker_spi.c | 8 ++--
src/tools/pgindent/typedefs.list | 3 --
73 files changed, 261 insertions(+), 273 deletions(-)