revlog.size: remove alternate implementation (revlogv0 specific)
it's only useful for revlogv0 anyway, revlogNG has the uncompressed size in
the index.
Basic install:
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
See http://mercurial.selenic.com/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.