Whole-line-or-region, More saner M- shortcuts

Removed buffer-move, totally useless. Just using Shift+arrows
or using Alt+number works very well.

A whole new set of shorcuts. Removed {i,j,k,l} scrolling.
Instead more mnemonic

Added PCRE-based regex search. Hope it is useful
Just use M-[ M-] for page-up and page-down