[PATCH] Allow manipulating files with long names on Windows

[Aaron Cohen]

# HG changeset patch
# User Aaron Cohen <aaron at assonance.org>
# Date 1295249042 18000
# Node ID 8b2e02872bc83f9e537a9754ce4b7bd0d9a5d9aa
# Parent  20a54bdf232832d3d6c4e4a43361dc84ec73dca0
Allow manipulating files with long names on Windows

Windows by default has a PATH_MAX of 260 characters. A while ago the
"store" format was added which allows repositories on Windows to
contain very long paths. At the time, a patch was proposed,
"longpath.patch" which enabled handling of those files in the working
copy but it was tabled.