context: simplify parents code

workingctx: add __contains__ method

status: various cleanups - rename lookup to cmp for formatting reasons - reduce nesting level of fixup code - sort fixup results - group comparison cases in a separate clause - make list initialization simpler - delay flag lookup for working directory - sort removed list in comparison - avoid sorting already sorted lists

status: use contexts

hgk: fix parent breakage

dirstate: simplify/optimize path checking - add fast _finddirs function - remove recursion from incpath/decpath - split changepath into addpath/droppath - change relax arg to check - move incpathcheck logic into addpath - move incpath into addpath - move decpath into droppath - inline code in self._dirs creation

acl: refactoring - undo class structure - make buildmatch return None for no function - use contexts properly - simplify check loop

manifest: make checkforbidden take a list

context: add walk method

context: add __int__ and hex methods

util: add sort helper

remove: work directly off status This allows us to use a single directory walk and to trivially ignore unknown files. The resulting code is also easier to follow.

status: clean up all users for unknown files

churn: major refactor - use contexts - use ui.pushbuffer and patch.diff to greatly simplify patch generation - simplify diff counting logic - fold all the counting functions together - simplify progress math - simplify padding function - kill graph helper function - simplify alias reading - use Schwartzian transform on stats - change some notes to debugs

Check that git patches only touch files under root