build: Fix some warnings with GCC 4.9

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
debug: remove: arm unwind: remove logspam while in debug mode

authored on 3 Nov 2013 by cyanogen
Fix warnings and compilation errors with Linaro
netfilter: Fix Build Error with -ffast-math

Signed-off-by: Chester Kener <Cl3Kener@gmail.com>