BONE_STOCK: use 4.7 aosp toolchain

Change-Id: I24a5bce01bfe66bc86fc02e520c4a6abe61eadf2
BONE_STOCK implies aosp kernel toolchains

Change-Id: I8e1ef6f69c4be0b92ce257ad1fe75c7b8806f4fc
Fix internal compiler error when compiling w/ arm-linux-androidabi-4.7

Change-Id: Ie2934704302bdfe3d982042173e05ba34dad3213
Omit some sketchy cflags when BONE_STOCK is defined

this should be a NO-OP when BONE_STOCK is not defined

Change-Id: Ic1474b4a87ad604bb44b0fbf74de82923c83039a
while(build) derp();

Change-Id: I9423e2cf5cd3a013d6f32a57c24961b07cd5338b
build: add gcc 4.9 to the barrier

Change-Id: Ic92b79bb6308810e5ba71135447ca7b62fb1a6e7