branches: 1.1.1;Initial revision
from ftp.gnu.org
branches: 1.1.1.1.2; 1.1.1.1.8;from ftp.gnu.org
Rebase to HEAD as of a few days ago.
sync with head.for a reference, the tree before this commit was taggedas yamt-pagecache-tag8.this commit was splitted into small chunks to avoida limitation of cvs. ("Protocol error: too many arguments")