commitctx: return a richer object from _prepare_files
Instead of returning a lot of different list, we introduce a rich object that
hold all the file related information. The unique object help with data
consistency and simply functions arguments and return.
In the rest of this series we will increase usage of this object to simplify
more code.
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.