tests: fix reported patch tool name in test-mq Strip any path of the patch executable, which it might return on failure.

tests: fix readline escape characters in output for test-doctest.py

merge with crew-stable

hgk: Display branch name for each head (issue 740) In the graphical view, each head is decorated with an additonal tag containing the branch name, if that head is not on the default branch.

tests: fix test-highlight for compatiblity with newer Pygments

update: mention null revision in help text

allow Mercurial to compile on Haiku

forbid username with '\n' at the changelog level It was already forbidden for ui.username() but no verification were made for username passed through the commandline.

listdir: add support for aborting if a certain path is found This lets us bail out early if we find '.hg', letting us skip sorting and bisecting for it.

osutil: fix some braindamage - entkind returns -1 on failure - compile if AT_SYMLINK_NOFOLLOW is missing - avoid fullpath overflow

dirstate: improve performance for building _dirs

osutil: major listdir cleanup

hgweb: let the web graph cope with low revisions/new repositories (issue1293)

hgweb: Respond with HTTP 403 for disabled archive types instead of 404 This makes it easier for clients/users to distinct between supported but disabled and unsupported archive types.

coal/paper: fix error page markup to show navigation again