update to gcc 4.8.4

Signed-off-by: Paul Beeler <pbeeler80@gmail.com>
Intel you are a pain in my...

Signed-off-by: Paul Beeler <pbeeler80@gmail.com>
use gcc 4.8 by default for linux targets

Signed-off-by: Paul Beeler <pbeeler80@gmail.com>
Fix typo
Merge remote-tracking branch 'sm/master' into sm