pgsql-server: Infrastructure for I/O of composite types: arrange for the

Log Message:
-----------
Infrastructure for I/O of composite types: arrange for the I/O routines
of a composite type to get that type's OID as their second parameter,
in place of typelem which is useless. The actual changes are mostly
centralized in getTypeInputInfo and siblings, but I had to fix a few
places that were fetching pg_type.typelem for themselves instead of
using the lsyscache.c routines. Also, I renamed all the related variables
from 'typelem' to 'typioparam' to discourage people from assuming that
they necessarily contain array element types.

Modified Files:
--------------
pgsql-server/doc/src/sgml/ref:
create_type.sgml (r1.50 -> r1.51)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/src/sgml/ref/create_type.sgml.diff?r1=1.50&r2=1.51)
pgsql-server/src/backend/access/common:
printtup.c (r1.82 -> r1.83)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/access/common/printtup.c.diff?r1=1.82&r2=1.83)
pgsql-server/src/backend/bootstrap:
bootstrap.c (r1.183 -> r1.184)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/bootstrap/bootstrap.c.diff?r1=1.183&r2=1.184)
pgsql-server/src/backend/commands:
copy.c (r1.225 -> r1.226)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/commands/copy.c.diff?r1=1.225&r2=1.226)
pgsql-server/src/backend/executor:
execTuples.c (r1.79 -> r1.80)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/executor/execTuples.c.diff?r1=1.79&r2=1.80)
nodeAgg.c (r1.121 -> r1.122)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/executor/nodeAgg.c.diff?r1=1.121&r2=1.122)
spi.c (r1.116 -> r1.117)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/executor/spi.c.diff?r1=1.116&r2=1.117)
pgsql-server/src/backend/nodes:
print.c (r1.68 -> r1.69)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/nodes/print.c.diff?r1=1.68&r2=1.69)
pgsql-server/src/backend/parser:
parse_coerce.c (r2.117 -> r2.118)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/parser/parse_coerce.c.diff?r1=2.117&r2=2.118)
parse_type.c (r1.68 -> r1.69)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/parser/parse_type.c.diff?r1=1.68&r2=1.69)
pgsql-server/src/backend/tcop:
fastpath.c (r1.72 -> r1.73)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/tcop/fastpath.c.diff?r1=1.72&r2=1.73)
postgres.c (r1.418 -> r1.419)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/tcop/postgres.c.diff?r1=1.418&r2=1.419)
pgsql-server/src/backend/utils/adt:
arrayfuncs.c (r1.102 -> r1.103)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/utils/adt/arrayfuncs.c.diff?r1=1.102&r2=1.103)
ruleutils.c (r1.169 -> r1.170)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/utils/adt/ruleutils.c.diff?r1=1.169&r2=1.170)
varlena.c (r1.114 -> r1.115)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/utils/adt/varlena.c.diff?r1=1.114&r2=1.115)
pgsql-server/src/backend/utils/cache:
lsyscache.c (r1.112 -> r1.113)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/utils/cache/lsyscache.c.diff?r1=1.112&r2=1.113)
pgsql-server/src/include:
funcapi.h (r1.11 -> r1.12)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/include/funcapi.h.diff?r1=1.11&r2=1.12)
pgsql-server/src/include/utils:
array.h (r1.46 -> r1.47)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/include/utils/array.h.diff?r1=1.46&r2=1.47)
lsyscache.h (r1.86 -> r1.87)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/include/utils/lsyscache.h.diff?r1=1.86&r2=1.87)
pgsql-server/src/pl/plperl:
plperl.c (r1.43 -> r1.44)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/pl/plperl/plperl.c.diff?r1=1.43&r2=1.44)
pgsql-server/src/pl/plpgsql/src:
pl_comp.c (r1.76 -> r1.77)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/pl/plpgsql/src/pl_comp.c.diff?r1=1.76&r2=1.77)
pl_exec.c (r1.105 -> r1.106)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/pl/plpgsql/src/pl_exec.c.diff?r1=1.105&r2=1.106)
plpgsql.h (r1.46 -> r1.47)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/pl/plpgsql/src/plpgsql.h.diff?r1=1.46&r2=1.47)
pgsql-server/src/pl/plpython:
plpython.c (r1.48 -> r1.49)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/pl/plpython/plpython.c.diff?r1=1.48&r2=1.49)
pgsql-server/src/pl/tcl:
pltcl.c (r1.85 -> r1.86)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/pl/tcl/pltcl.c.diff?r1=1.85&r2=1.86)