status: don't crash if a lookup file disappears This can happen if another process (even another hg process!) comes along and removes the file at that time. This partly resolves issue5584, but not completely -- a bogus dirstate update can still happen. However, the full fix is too involved for stable.

match: simplify nevermatcher Most of it does the same as its superclass, so it can simply be removed. It also seems to make more sense for it to use relative paths, as we do for everything except alwaysmatcher, although nevermatcher.uipath() will probably never get called anyway, so it won't matter.