pgsql: Fix a passel of recently-committed violations of the rule 'thou

Log Message:
-----------
Fix a passel of recently-committed violations of the rule 'thou shalt
have no other gods before c.h'. Also remove some demonstrably redundant
#include lines, mostly of <errno.h> which was added to c.h years ago.

Modified Files:
--------------
pgsql/contrib/btree_gist:
btree_numeric.c (r1.8 -> r1.9)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/btree_gist/btree_numeric.c.diff?r1=1.8&r2=1.9)
btree_utils_num.h (r1.10 -> r1.11)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/btree_gist/btree_utils_num.h.diff?r1=1.10&r2=1.11)
btree_utils_var.c (r1.15 -> r1.16)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/btree_gist/btree_utils_var.c.diff?r1=1.15&r2=1.16)
btree_utils_var.h (r1.6 -> r1.7)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/btree_gist/btree_utils_var.h.diff?r1=1.6&r2=1.7)
pgsql/contrib/chkpass:
chkpass.c (r1.16 -> r1.17)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/chkpass/chkpass.c.diff?r1=1.16&r2=1.17)
pgsql/contrib/fuzzystrmatch:
dmetaphone.c (r1.7 -> r1.8)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/fuzzystrmatch/dmetaphone.c.diff?r1=1.7&r2=1.8)
pgsql/contrib/pg_trgm:
trgm.h (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pg_trgm/trgm.h.diff?r1=1.4&r2=1.5)
pgsql/contrib/tsearch2/gendict:
dict_snowball.c.IN (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/gendict/dict_snowball.c.IN.diff?r1=1.4&r2=1.5)
dict_tmpl.c.IN (r1.5 -> r1.6)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/gendict/dict_tmpl.c.IN.diff?r1=1.5&r2=1.6)
pgsql/contrib/tsearch2/ispell:
spell.c (r1.31 -> r1.32)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/ispell/spell.c.diff?r1=1.31&r2=1.32)
regis.c (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/ispell/regis.c.diff?r1=1.4&r2=1.5)
spell.h (r1.12 -> r1.13)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/ispell/spell.h.diff?r1=1.12&r2=1.13)
pgsql/contrib/tsearch2:
common.c (r1.7 -> r1.8)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/common.c.diff?r1=1.7&r2=1.8)
pgsql/src/backend/executor:
nodeSubplan.c (r1.77 -> r1.78)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeSubplan.c.diff?r1=1.77&r2=1.78)
pgsql/src/backend/libpq:
auth.c (r1.137 -> r1.138)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/libpq/auth.c.diff?r1=1.137&r2=1.138)
pqcomm.c (r1.185 -> r1.186)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/libpq/pqcomm.c.diff?r1=1.185&r2=1.186)
pqformat.c (r1.41 -> r1.42)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/libpq/pqformat.c.diff?r1=1.41&r2=1.42)
pgsql/src/backend/port:
posix_sema.c (r1.16 -> r1.17)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/posix_sema.c.diff?r1=1.16&r2=1.17)
ipc_test.c (r1.20 -> r1.21)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/ipc_test.c.diff?r1=1.20&r2=1.21)
sysv_sema.c (r1.19 -> r1.20)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/sysv_sema.c.diff?r1=1.19&r2=1.20)
sysv_shmem.c (r1.46 -> r1.47)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/sysv_shmem.c.diff?r1=1.46&r2=1.47)
pgsql/src/backend/port/dynloader:
aix.c (r1.17 -> r1.18)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/dynloader/aix.c.diff?r1=1.17&r2=1.18)
pgsql/src/backend/port/win32:
shmem.c (r1.12 -> r1.13)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/port/win32/shmem.c.diff?r1=1.12&r2=1.13)
pgsql/src/backend/storage/file:
buffile.c (r1.23 -> r1.24)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/file/buffile.c.diff?r1=1.23&r2=1.24)
pgsql/src/backend/storage/freespace:
freespace.c (r1.52 -> r1.53)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/freespace/freespace.c.diff?r1=1.52&r2=1.53)
pgsql/src/backend/storage/ipc:
ipc.c (r1.93 -> r1.94)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/ipc/ipc.c.diff?r1=1.93&r2=1.94)
pgsql/src/backend/storage/smgr:
md.c (r1.120 -> r1.121)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/smgr/md.c.diff?r1=1.120&r2=1.121)
pgsql/src/backend/utils/adt:
tid.c (r1.52 -> r1.53)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/tid.c.diff?r1=1.52&r2=1.53)
datetime.c (r1.167 -> r1.168)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/datetime.c.diff?r1=1.167&r2=1.168)
float.c (r1.125 -> r1.126)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/float.c.diff?r1=1.125&r2=1.126)
numeric.c (r1.93 -> r1.94)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/numeric.c.diff?r1=1.93&r2=1.94)
pg_lzcompress.c (r1.21 -> r1.22)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/pg_lzcompress.c.diff?r1=1.21&r2=1.22)
pgsql/src/bin/psql:
mainloop.h (r1.19 -> r1.20)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/mainloop.h.diff?r1=1.19&r2=1.20)
help.c (r1.111 -> r1.112)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/help.c.diff?r1=1.111&r2=1.112)
pgsql/src/interfaces/ecpg/ecpglib:
error.c (r1.12 -> r1.13)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/error.c.diff?r1=1.12&r2=1.13)
execute.c (r1.51 -> r1.52)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/execute.c.diff?r1=1.51&r2=1.52)
pgsql/src/interfaces/ecpg/preproc:
pgc.l (r1.146 -> r1.147)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/pgc.l.diff?r1=1.146&r2=1.147)
pgsql/src/interfaces/libpq:
fe-protocol2.c (r1.24 -> r1.25)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/fe-protocol2.c.diff?r1=1.24&r2=1.25)
fe-misc.c (r1.128 -> r1.129)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/fe-misc.c.diff?r1=1.128&r2=1.129)
pgsql/src/timezone:
pgtz.c (r1.42 -> r1.43)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/pgtz.c.diff?r1=1.42&r2=1.43)