convert: fix test complaint for mtn bits

cleanup monotone conversion and use commandline class

initial version of monotone source for convert extension

notify: print diffstat even if maxline == 0

Make clear that for a changegroup '-r' pulls "up to" a revision If some better wording is found, it can be changed later.

two fixes for the pager stuff - open pipe in binary mode - don't start a pager if stdout is not a tty (this prevents test-ssh from hanging if you set ui.usepager=True in run-tests.py)

Use the pager given by the environment to display long output Unix systems usually have a PAGER environment variable set. If it is set, mercurial will use the pager application to display output. Two configuration variables are available to influence the behaviour of the pager. ui.pager sets the pager application. The pager is only used if ui.usepager is true. By default ui.usepager is disabled.

Fix thinko in test-inherit-mode If we don't change any rwx bit in the last test, hg will skip the calls to chmod since it'll assume they're not needed. This might fix things on BSD systems.

test-serve: replace copy/paste with shell function

revert: update state of files in the "checkout" list This can make a difference when there are filters involved and decode(encode(working-dir-data)) != working-dir-data even though encode(decode(repo-data)) == repo-data An example is a working dir file that uses only \n when you're using the win32text extension.

normallookup: during merges, restore the state saved by remove

dirstate.remove: during merges, remember the previous file state We encode the previous state as a negative file size (AFAICS, previous versions of hg always have size == 0 when state == 'r'). We save the state of 'm'erged and dirty files, because they're the two states that indicate that a file has to be committed on a merge to correctly record per-file history.

debugstate: add --nodates This can be useful for tests.

patch: fix corner case with update + copy patch handling (issue 937) The self patching of files when diffed with a backup is a bit peculiar to me. It makes sense in mpatch, that's less clear in mercurial patching code. Let's document and preserve it for now.