pgsql: Rename some encoding conversion modules to keep pathnames in our

Log Message:
-----------
Rename some encoding conversion modules to keep pathnames in our source
tarballs under 100 characters. This should avoid failures with certain
untarring tools (WinZip and Midnight Commander have been mentioned as
likely suspects). Per my proposal of yesterday.
catversion bumped since the initial contents of pg_proc change.

Modified Files:
--------------
pgsql/src/backend/utils/mb/conversion_procs:
Makefile (r1.23 -> r1.24)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/Makefile?r1=1.23&r2=1.24)
pgsql/src/include/catalog:
catversion.h (r1.548 -> r1.549)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/catalog/catversion.h?r1=1.548&r2=1.549)

Added Files:
-----------
pgsql/src/backend/utils/mb/conversion_procs/euc2004_sjis2004:
Makefile (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/euc2004_sjis2004/Makefile?rev=1.1&content-type=text/x-cvsweb-markup)
euc2004_sjis2004.c (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/euc2004_sjis2004/euc2004_sjis2004.c?rev=1.1&content-type=text/x-cvsweb-markup)
pgsql/src/backend/utils/mb/conversion_procs/utf8_and_euc2004:
Makefile (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/utf8_and_euc2004/Makefile?rev=1.1&content-type=text/x-cvsweb-markup)
utf8_and_euc2004.c (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/utf8_and_euc2004/utf8_and_euc2004.c?rev=1.1&content-type=text/x-cvsweb-markup)
pgsql/src/backend/utils/mb/conversion_procs/utf8_and_sjis2004:
Makefile (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/utf8_and_sjis2004/Makefile?rev=1.1&content-type=text/x-cvsweb-markup)
utf8_and_sjis2004.c (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/utf8_and_sjis2004/utf8_and_sjis2004.c?rev=1.1&content-type=text/x-cvsweb-markup)

Removed Files:
-------------
pgsql/src/backend/utils/mb/conversion_procs/euc_jis_2004_and_shift_jis_2004:
Makefile
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/euc_jis_2004_and_shift_jis_2004/Makefile)
euc_jis_2004_and_shift_jis_2004.c
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/euc_jis_2004_and_shift_jis_2004/euc_jis_2004_and_shift_jis_2004.c)
pgsql/src/backend/utils/mb/conversion_procs/utf8_and_euc_jis_2004:
Makefile
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/utf8_and_euc_jis_2004/Makefile)
utf8_and_euc_jis_2004.c
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/utf8_and_euc_jis_2004/utf8_and_euc_jis_2004.c)
pgsql/src/backend/utils/mb/conversion_procs/utf8_and_shift_jis_2004:
Makefile
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/utf8_and_shift_jis_2004/Makefile)
utf8_and_shift_jis_2004.c
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/utf8_and_shift_jis_2004/utf8_and_shift_jis_2004.c)