bundle2: move function building obsmarker-part in the bundle2 module We move it next to similar part building functions. We will need it for the "writenewbundle" logic. This will allow us to easily include obsmarkers in on-disk bundle, a necessary step before having `hg strip` also operate on markers. (Yes, the bundle2 module was already too large, but there any many interdependencies between its components so it is non-trivial to split, this is a quest for another adventure.)

policy: remove unused policynoc and policynocffi constants

cffi: remove superfluous "if True" blocks

cffi: split modules from pure The copyright lines are updated per change history. cffi/osutil.py isn't tested since I have no access to OS X machine right now, sorry.

policy: extend API version checks for cffi This is just a stub for future extension. I could add a version constant to CFFI modules by putting it to both ffi.set_source() and ffi.cdef(), but that doesn't seem right. So for now, cffi modules will be explicitly unversioned (i.e. version constant must be undefined or set to None.) We can revisit it later when we need to consider CFFI support more seriously.

filterpyflakes: allow reexporting pure symbols from cffi modules cffi modules will do 'from ..pure.<module> import *'.

import-checker: guess names of C extension modules Since extension modules aren't included in the list of source files, they need to be populated somehow. Otherwise the import from cext/cffi would be treated as a global one.

import-checker: convert localmods to a set of module names This makes it easy to add a source-less module name to the set.