pull: don't suggest running hg merge when new heads are on different branches
After a pull when new heads are added but no head is added on the current
branch, the "run 'hg merge'" message can be misleading. This patch doesn't
output the merge message in that scenario.
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
See http://mercurial.selenic.com/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.