autogen.sh: advance CXX search, eliminate CC (not used)
autogen.sh: advance CXX search, eliminate CC (not used)

xzero/x0,christianparpart/x0,xzero/x0,xzero/x0,christianparpart/x0,xzero/x0,christianparpart/x0,xzero/x0,christianparpart/x0,xzero/x0,christianparpart/x0,christianparpart/x0,christianparpart/x0