Fix localrepo.changes() Correctly decide if we are diffing the working dir

Change revlog.heads to walk the revision graph using revision numbers On the kernel repo: $ hg heads -q before after RevlogNG 1.11 0.52 Revlogv0 0.80 0.69 Since the current code for tags has to find all the heads of the repo, this also helps there: $ hg tags before after RevlogNG 2.35 1.76 Revlogv0 2.04 1.90

Add revlog.parentrevs function. This allows one to walk the revision graph using only revision numbers, which can be faster than using revision hashes, especially for RevlogNG, where the parents of a revision are stored as revision numbers.

mq: add qimported patches if patch dir is a repo

Test case for #294

simplify filterfiles when filtering based on a directory since an unkown files cannot be an exact match, we bisect for a <path>/ instead of <path> and we get only the files below the directory.

filterfiles: Search as long as the target is a prefix of current. filterfiles was failing to find files for directory arguments if another file existed that started with the directory name and sorted earlier. For example, a manifest of ('foo.h', 'foo/foo') would cause filterfiles('foo') to return nothing. This resolves issue #294.

remove duplicate code.

Fixed conditional include of stdint.h for windows/msvc6/python2.3 environment.

Fix hg diff regression