test -O3

Conflicts:

	core/combo/TARGET_linux-arm.mk
	core/combo/select.mk

Change-Id: Iaa05edb22b82c6430a8d83b6e02f86fa2e8df122
use linaro 4.8, picked from  DJLaMontagneIII@42d78dcc666d1e2c5eaa187907075ab62499ce58

Change-Id: Ief442949f2ee99e4d069e79e5ddb07b9b7174638
compile linaro 4.8

Change-Id: I9e126795e1b3d041519a739c3d7a6b2c34bdb562
compile 4.8 cleaner

Change-Id: I1bd46e339f4c2cd8d936059d6057cf441b600766
Merge KVT49L

Change-Id: Ia704fe205f4f1ee6b36ccad092e2d05eb22a51c9