Log Message:
-----------
Fix LWLockAssign() so that it can safely be executed after postmaster
initialization. Add spinlocking, fix EXEC_BACKEND unsafeness.
Modified Files:
--------------
pgsql/src/backend/storage/ipc:
shmem.c (r1.85 -> r1.86)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/ipc/shmem.c.diff?r1=1.85&r2=1.86)
pgsql/src/backend/storage/lmgr:
lwlock.c (r1.31 -> r1.32)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/lmgr/lwlock.c.diff?r1=1.31&r2=1.32)