makefile: rename 'LIB' variable to 'LIBS'

It's not uncommon to get environment conflicts with the LIB variable (Python on Windows sets it, as well as older versions of Visual C++). So the easy fix is to rename it.

Signed-off-by: Steven Noonan <steven@uplinklabs.net>

Created by  Steven Noonan  on October 24, 2009
6VNAYYT6JMWYHMFLXJZPPHBRMLQTBAKFXMPUOIRVLDIZ3CT4NCNQC
Change contents