Collect and copy all files belonging to root of $HOME in one step. This speedups install in Cygwin: 7s => 5s.
QUILT_DIFF_ARGS="--color=auto -p ab"
QUILT_DIFF_OPTS="-p"
QUILT_REFRESH_ARGS="-p ab"
QUILT_PUSH_ARGS="--color=auto"
QUILT_SERIES_ARGS="--color=auto"
QUILT_PATCH_OPTS="--unified"
QUILT_NO_DIFF_INDEX=1
QUILT_NO_DIFF_TIMESTAMPS=1