Log Message:
-----------
Ensure that we only create one ConsoleCtrlHandler per psql process,
so as to avoid performance issues and possible ultimate crash on long
psql scripts. Per Merlin Moncure.
Modified Files:
--------------
pgsql/src/bin/psql:
common.c (r1.109 -> r1.110)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/common.c.diff?r1=1.109&r2=1.110)