pgsql: Unicode escapes in strings and identifiers

Log Message:
-----------
Unicode escapes in strings and identifiers

Modified Files:
--------------
pgsql/doc/src/sgml:
syntax.sgml (r1.123 -> r1.124)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/syntax.sgml?r1=1.123&r2=1.124)
pgsql/src/backend/catalog:
sql_features.txt (r1.29 -> r1.30)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/sql_features.txt?r1=1.29&r2=1.30)
pgsql/src/backend/parser:
scan.l (r1.146 -> r1.147)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/scan.l?r1=1.146&r2=1.147)
pgsql/src/backend/utils/adt:
xml.c (r1.79 -> r1.80)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/xml.c?r1=1.79&r2=1.80)
pgsql/src/backend/utils/mb:
wchar.c (r1.67 -> r1.68)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/wchar.c?r1=1.67&r2=1.68)
pgsql/src/bin/psql:
psqlscan.l (r1.25 -> r1.26)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/psqlscan.l?r1=1.25&r2=1.26)
pgsql/src/include/mb:
pg_wchar.h (r1.79 -> r1.80)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/mb/pg_wchar.h?r1=1.79&r2=1.80)
pgsql/src/interfaces/ecpg/preproc:
pgc.l (r1.166 -> r1.167)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/pgc.l?r1=1.166&r2=1.167)
preproc.y (r1.379 -> r1.380)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/preproc.y?r1=1.379&r2=1.380)
pgsql/src/interfaces/ecpg/test:
ecpg_schedule (r1.5 -> r1.6)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/ecpg_schedule?r1=1.5&r2=1.6)
ecpg_schedule_tcp (r1.5 -> r1.6)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/ecpg_schedule_tcp?r1=1.5&r2=1.6)
pgsql/src/interfaces/ecpg/test/preproc:
Makefile (r1.4 -> r1.5)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/preproc/Makefile?r1=1.4&r2=1.5)
pgsql/src/test/regress/expected:
strings.out (r1.34 -> r1.35)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/strings.out?r1=1.34&r2=1.35)
pgsql/src/test/regress/sql:
strings.sql (r1.23 -> r1.24)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/strings.sql?r1=1.23&r2=1.24)

Added Files:
-----------
pgsql/src/interfaces/ecpg/test/expected:
preproc-strings.c (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/preproc-strings.c?rev=1.1&content-type=text/x-cvsweb-markup)
preproc-strings.stderr (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/preproc-strings.stderr?rev=1.1&content-type=text/x-cvsweb-markup)
preproc-strings.stdout (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/preproc-strings.stdout?rev=1.1&content-type=text/x-cvsweb-markup)
pgsql/src/interfaces/ecpg/test/preproc:
strings.pgc (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/preproc/strings.pgc?rev=1.1&content-type=text/x-cvsweb-markup)