filectx: add a rawflags method The new method returns the low-level revlog flag. We already have "rawdata" so a "rawflags" makes sense. Both "rawflags" and "rawdata" will be used in a later patch.

filectx: move size to basefilectx See previous patch for context - avoid code duplication.

filectx: make renamed a property cache See previous patch for context - mainly to avoid code duplication.

filectx: make flags a property cache Make basefilectx._flags a property cache, so basefilectx.flags() could be reasonably reused. This avoids code duplication between memfilectx and a class added in a later patch.

commandserver: move printbanner logic to bindsocket bindsocket now handles listen automatically. "printbanner" seems to be just a part of "bindsocket". This simplifies the interface a bit.

commandserver: move "listen" responsibility from service to handler This enables chg to replace a server socket in an atomic way: 1. bind to a temp address 2. listen 3. rename Currently 3 happens before 2 so a client may see the socket file but fails to connect to it.

hghave: remove py27+ capability It is now unused. And we require Python 2.7+ now so this check is not necessary.

tests: remove test targeting Python 2.6 We just removed support for Python 2.7. This test is dead since it only ran on <2.7.

setup: drop support for Python 2.6 (BC) Per discussion on the mailing list and elsewhere, we've decided that Python 2.6 is too old to continue supporting. We keep accumulating hacks/fixes/workarounds for 2.6 and this is taking time away from more important work. So with this patch, we officially drop support for Python 2.6 and require Python 2.7 to run Mercurial.

perf: move revlog construction and length calculation out of benchmark We don't need to measure the time it takes to open the revlog or calculate its length. This is more consistent with what other perf* functions do. While I was here, I also renamed the revlog variable from "r" to "rl" - again in the name of consistency.