windows: use umask 022 in debugstate output
debugstate would always report files as mode 666 or 777 on Windows.
umask is not used on Windows, but faking and using a defalt value of 022
matches what the test suite uses on Unix.
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.