Log Message:
-----------
Remove obsolete comment about VACUUM FULL: it takes buffer content locks
now, and must do so to ensure bgwriter doesn't write a page that is in
process of being compacted.
Modified Files:
--------------
pgsql/src/backend/storage/buffer:
README (r1.9 -> r1.10)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/buffer/README.diff?r1=1.9&r2=1.10)