pgsql: Change numericsep to a boolean, and make it locale-aware.

Log Message:
-----------
Change numericsep to a boolean, and make it locale-aware.

Modified Files:
--------------
pgsql/doc/src/sgml/ref:
psql-ref.sgml (r1.146 -> r1.147)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/psql-ref.sgml.diff?r1=1.146&r2=1.147)
pgsql/src/bin/psql:
command.c (r1.148 -> r1.149)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/command.c.diff?r1=1.148&r2=1.149)
print.c (r1.66 -> r1.67)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/print.c.diff?r1=1.66&r2=1.67)
print.h (r1.26 -> r1.27)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/print.h.diff?r1=1.26&r2=1.27)
startup.c (r1.118 -> r1.119)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/startup.c.diff?r1=1.118&r2=1.119)