First autoconf setup

Detect the presence of kqueue API. Implement active looping if no kqueue.
Moved few var declarations inside ifdef
Remove INSTALL file as it is modified (and created) by autoconf
Merge branch 'autoconf' into benmaster
Remove the use of a "data" pointer which was a pointing at screen->datas
DEV: start to port kqueue mechanics with epoll on Linux
Add a function to refresh the menus:

move the menu up or down

copy each updated line into the description field

print the UPDATED_CHAR

refresh the menus/panels
fix indentation issues