pgsql: Remove useless duplicate inclusions of system header files.

Remove useless duplicate inclusions of system header files.

c.h #includes a number of core libc header files, such as <stdio.h>.
There's no point in re-including these after having read postgres.h,
postgres_fe.h, or c.h; so remove code that did so.

While at it, also fix some places that were ignoring our standard pattern
of "include postgres[_fe].h, then system header files, then other Postgres
header files". While there's not any great magic in doing it that way
rather than system headers last, it's silly to have just a few files
deviating from the general pattern. (But I didn't attempt to enforce this
globally, only in files I was touching anyway.)

I'd be the first to say that this is mostly compulsive neatnik-ism,
but over time it might save enough compile cycles to be useful.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/9e3755ecb2d058f7d123dd35a2e1784006190962

Modified Files
--------------
contrib/fuzzystrmatch/dmetaphone.c | 12 +++++++-----
contrib/ltree/crc32.c | 4 ----
contrib/pgcrypto/px.h | 1 -
src/backend/access/transam/timeline.c | 1 -
src/backend/access/transam/twophase.c | 1 -
src/backend/access/transam/xlogarchive.c | 1 -
src/backend/commands/dbcommands.c | 1 -
src/backend/commands/tablespace.c | 1 -
src/backend/libpq/ifaddr.c | 1 -
src/backend/port/atomics.c | 1 -
src/backend/port/dynloader/freebsd.h | 1 -
src/backend/port/dynloader/netbsd.h | 1 -
src/backend/port/dynloader/openbsd.h | 1 -
src/backend/port/win32/crashdump.c | 3 +--
src/backend/postmaster/autovacuum.c | 1 -
src/backend/replication/basebackup.c | 1 -
src/backend/replication/logical/snapbuild.c | 1 -
src/backend/replication/walreceiverfuncs.c | 1 -
src/backend/storage/ipc/dsm.c | 1 -
src/backend/storage/ipc/dsm_impl.c | 1 -
src/backend/storage/ipc/latch.c | 1 -
src/backend/utils/adt/cash.c | 1 -
src/backend/utils/adt/dbsize.c | 1 -
src/backend/utils/adt/inet_cidr_ntop.c | 1 -
src/backend/utils/adt/inet_net_pton.c | 1 -
src/backend/utils/adt/pg_locale.c | 1 -
src/backend/utils/init/miscinit.c | 1 -
src/bin/initdb/initdb.c | 1 -
src/bin/pg_basebackup/pg_basebackup.c | 1 -
src/bin/pg_basebackup/pg_receivewal.c | 1 -
src/bin/pg_basebackup/streamutil.c | 3 ---
src/bin/pg_ctl/pg_ctl.c | 11 ++++-------
src/bin/pg_dump/parallel.c | 14 ++++++--------
src/bin/pg_dump/pg_backup_archiver.c | 16 +++++++---------
src/bin/pg_dump/pg_dump.c | 3 ---
src/bin/pg_dump/pg_dumpall.c | 4 ----
src/bin/pg_dump/pg_restore.c | 15 +++++----------
src/bin/pg_resetwal/pg_resetwal.c | 1 -
src/bin/pg_rewind/copy_fetch.c | 2 --
src/bin/pg_rewind/fetch.c | 1 -
src/bin/pg_rewind/file_ops.c | 1 -
src/bin/pg_rewind/filemap.c | 1 -
src/bin/pg_rewind/libpq_fetch.c | 1 -
src/bin/pg_upgrade/dump.c | 1 -
src/bin/pg_upgrade/exec.c | 5 ++---
src/bin/pg_upgrade/option.c | 11 +++++------
src/bin/pg_upgrade/parallel.c | 9 +++------
src/bin/pg_upgrade/tablespace.c | 2 --
src/bin/pgevent/pgevent.c | 6 ------
src/bin/psql/command.c | 2 --
src/bin/psql/crosstabview.c | 2 --
src/bin/psql/help.c | 1 -
src/bin/psql/startup.c | 4 ----
src/common/ip.c | 1 -
src/common/username.c | 2 --
src/common/wait_error.c | 2 --
src/fe_utils/print.c | 1 -
src/include/libpq/libpq.h | 1 -
src/include/port/atomics/generic-msvc.h | 1 -
src/include/utils/pg_locale.h | 1 -
src/interfaces/ecpg/ecpglib/data.c | 2 --
src/interfaces/ecpg/ecpglib/execute.c | 1 -
src/interfaces/ecpg/ecpglib/typename.c | 1 -
src/interfaces/ecpg/preproc/ecpg.c | 2 +-
src/interfaces/ecpg/preproc/pgc.l | 1 -
src/interfaces/libpq/fe-connect.c | 1 -
src/interfaces/libpq/libpq-int.h | 1 -
src/interfaces/libpq/pthread-win32.c | 1 -
src/pl/plperl/plperl.c | 1 -
src/port/chklocale.c | 5 -----
src/port/dirmod.c | 1 -
src/port/inet_net_ntop.c | 1 -
src/port/open.c | 1 -
src/port/system.c | 1 -
src/test/isolation/isolationtester.c | 3 ---
src/timezone/strftime.c | 1 -
src/timezone/zic.c | 1 -
77 files changed, 41 insertions(+), 155 deletions(-)