revlog: refactor chunk cache interface again
- chunk to _chunk
- _prime to _chunkraw
- _chunkclear for cache clearing
- _chunk calls _chunkraw
- clean up _prime a bit
- simplify users in revision and checkinlinesize
- drop file descriptor passing (we're better off opening fds lazily
clone: fall back to pull source repo cannot be locked,
937ee88da3ef was a noop
937ee88da3ef was a noop, it was missing the wait keyword
fixed 0x
c0150004 error building Mercurial under Python 2.6 for Windows