commit: pass ChangingFiles object as argument to _process_files
Instead of returning it, we pass it as an argument. This makes the whole if-else
in `_prepare_files` a bit simpler. Else each if-else branch was creating the
object.
Differential Revision: https://phab.mercurial-scm.org/D9194
Mercurial
=========
Mercurial is a fast, easy to use, distributed revision control tool
for software developers.
Basic install::
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
Running without installing::
$ make local # build for inplace usage
$ ./hg --version # should show the latest version
See https://mercurial-scm.org/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.