rename some Makefile vars
rename some Makefile vars

zhmz90/scs,zhmz90/scs,zhmz90/scs,zhmz90/scs,robertwb/scs,zhmz90/scs,robertwb/scs,robertwb/scs,ajfriend/scs,cvxgrp/scs,robertwb/scs,ajfriend/scs,ajfriend/scs,zhmz90/scs,ajfriend/scs,ajfriend/scs,robertwb/scs,ajfriend/scs,ajfriend/scs,zhmz90/scs,robertwb/scs,robertwb/scs