extensions: obsolete and remove interhg extension
With the addition of the websub filter extension this extension is no longer
needed. We maintain a sort of backwards compatibility by reading the [interhg]
section and using it as we would use the [websub] section.
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 http://mercurial.selenic.com/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.