removed another hardcoded -O2

this also removes the option to build without linaro optimizations

Change-Id: I703ac4b89f9e49a4c4bafa77ecd083da7e42fe14
-03 for host compiler and linux x86 processor code generation optimized

current code generation for x86 processors is not set to run optimizations
for the current host processor but rather for arch.  so why not tune the output
for the native processor?

Change-Id: I0b94674bf487e52486c9b0865f4bfce316403a13
Merge changes I0b94674b,I703ac4b8 into jb42

* changes:
  -03 for host compiler and linux x86 processor code generation optimized
  removed another hardcoded -O2