test-rename: accept solaris diff
Solaris diff gives
@@ -1,1 +1,1 @@
instead of
@@ -1 +1 @@
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.