bookmarks: separate bookmarks update code from localrepo's pull. We explicitly want to update bookmarks from a remote. This will avoid duplicate calls to listkeys if we clone (which calls pull) and keep bookmark related code together.

tests: add tests for bookmarks support in hg identify

identify: list bookmarks for remote repositories

hgignore: ignore dll files generated under cygwin

pager: don't page stderr if it's being redirected (issue2541)

color: port to using ctypes (issue2687) replacing usage of pywin32, which was removed for Mercurial 1.8

hgweb: drop use of super() for Exception base class In Python 2.4, Exception is an old-style class and doesn't work with super.