For all i386 string assembly functions that don't overlap use END() sothat symbol size information is available.
branches: 1.1.50; 1.1.56;Merge libkern + libc common files. As requested by core.
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")