Log Message:
-----------
Add some test scaffolding to allow cache-flush stress testing (and I do
mean stress ... system is orders of magnitude slower with this enabled).
Modified Files:
--------------
pgsql/src/backend/utils/cache:
inval.c (r1.74 -> r1.75)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/cache/inval.c.diff?r1=1.74&r2=1.75)