With this code in action, I can successfully print arabic and chinese on linux
and cygwin. It fails to print chinese on my Mac but prints arabic. It prints '?'
on Windows console but it *doesn't throw* which is the biggest improvement here.
It was particularly a problem on windows because WindowsError's description text
is in the current ANSI code page so it failed to print if the text was not pure
ASCII, like error message when using Windows' French UI.

R=dpranke@chromium.org
BUG=none
TEST=manual unit test ./tests/fix_encoding_test.py and it shouldn't throw

Review URL: http://codereview.chromium.org/6676090

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@79006 0039d316-1c4b-4281-b951-d872f2087c98