Log Message:
-----------
Quick hack to make the VXID of a prepared transaction be -1/XID,
so that different prepared xacts can be told apart in the pg_locks
view. Per suggestion from Florian.
Modified Files:
--------------
pgsql/src/backend/access/transam:
twophase.c (r1.33 -> r1.34)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/transam/twophase.c?r1=1.33&r2=1.34)