localrepo: clear _filecache earlier to really force reloading (issue3462) ce0ad184f489 attempted to force the filecaches in localrepo to reload everything after a rollback. But simply clearing _filecache isn't enough, invalidate() needs to be called before/after. localrepo._rollback calls invalidate() already, so we clear the map right afterwards which ensures everything will be reread.

lsprof: report units correctly

cleanup: use the deque type where appropriate There have been quite a few places where we pop elements off the front of a list. This can turn O(n) algorithms into something more like O(n**2). Python has provided a deque type that can do this efficiently since at least 2.4. As an example of the difference a deque can make, it improves perfancestors performance on a Linux repo from 0.50 seconds to 0.36.

perf: add a perfancestors benchmark

merge with stable

merge with crew

merge with i18n

i18n-ja: synchronized with 2478594b37c2

i1n-ru:synchronized with b748106fe616

i18n-pt_BR: synchronized with 0a730d3c5aae