manifest: introduce manifestlog and manifestctx classes
This is the start of a large refactoring of the manifest class. It introduces
the new manifestlog and manifestctx classes which will represent the collection
of all manifests and individual instances, respectively.
Future patches will begin to convert usages of repo.manifest to
repo.manifestlog, adding the necessary functionality to manifestlog and instance
as they are needed.
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.