graft: abort if --date/user specified with --currentdate/currentuser (BC)
They are conflicting options. Let's explicitly ban such combination.
Note that this means you need "--no-currentdate --date" to override
--currentdate specified in aliases/defaults.
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.