addremove: don't perform m.exact/rel until needed Moves the m.exact and m.rel calls within the conditionals they are used in. On a large repo this brings addremove from 7.1 seconds down to 6.3 (13%).

addremove: don't call lexists, isdir, and islink The dirstate walk results contain the stat information for each path, so we don't need to query it again. On a large repo this makes addremove go from 8.35 seconds to 7.1 (15%).

addremove: only query dirstate once per path Previously the addremove code queried the dirstate 4 times per path. Now it only does so once. On a large repo this brings addremove from 9.5 seconds to 8.35 seconds (12%).

tests: fix windows test failure with largefiles

merge with stable

tests: fix windows test failure in test-subrepo.t

merge with stable

largefiles: don't crash when trying to find default dest for url without path b32e55e6c3c7 introduced a crash when cloning a url without path - where util.url().path would be None. This None will now be handled as ''. clone will thus abort with 'repository / not found' as before.

hgweb.cgi: fix internal WSGI emulation (issue3804) The internal WSGI emulation in wsgicgi.py was not fully WSGI compliant and assumed that all responses sent a body. With 3fbdbeab38cc that caused a real bug when using hgweb.cgi. wsgicgi.py will now make sure headers always are sent, using the pattern from PEP 333 and similar to how it is done in c007e5c54b16.

bdiff: simplify overflow checks Rather than check that each delta start, end, and length is within 32 bits, we simply check that the input strings are under 4GB.