WIP: build changes for ARM

This currently compiles but does not bootstrap due to jl_cpuid. I was able to stub that out before, but I think it is more deeply entangled now.

See Makefile.user.fake for other options used.

note DYNAMIC_ARCH=0
edit openblas-.../c_check.c and remove the -m32 compiler option, as this appears to be unsupported by the arm GCC build (at least with Ubuntu 12.04. there are some suggestions to install g++-4.8.1-multilib, but that did not help me)
See here for all of the packages I have installed.