Improved completion menu by allowing c-p,c-n scrolling through it.
Removed automatically resizing buffers, use c-w= if you need it.
Added scrolloff, controlling the amount of lines that are always
under/above the cursor. This fixes the cursor being at the very bottom
of the page, after doing e.g. zb or zt and will allow seeing a bit more
information around it at all times.
Marty Oehme
facaa3e185
