[PATCH] pygrub improvements

[aq <aquynh@gmail.com>]

here is a patch for pygrub (tools/pygrub/src/pygrub), which provides:

- generalize grub menu display (by using constants for menu position and size)
- support basic grub menu color
- correctly handle choosing menu item, even if menu size is less then
number of grub menu items
- allow user to quit pygrub by pressing 'q'
- few cleanups

Signed-off-by: Nguyen Anh Quynh <aquynh@gmail.com>

for those interested, here is a screenshot of the patched pygrub:
http://133.27.240.160/xen/pygrub2.png

$ diffstat pygrub3.patch 
 pygrub |  166 ++++++++++++++++++++++++++++++++++++-----------------------------
 1 files changed, 93 insertions(+), 73 deletions(-)

-- 
regards,
aq