export: fixed silent output file overwriting
hg export -o outfile 1 2 3 4 had the same effect as hg -o outfile 4
This was caused by opening with 'w' instead of 'a'. This only occurs when
the filename pattern resulted in ambiguous patch filenames.
Basic install:
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
See http://www.selenic.com/mercurial/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.