[LEDE-DEV] [OpenWrt-Devel] [PATCH RFC firewall3] musl-compat: avoid kernel header conflicts

[Jo-Philipp Wich]

Hi again,

> Will see if I find another solution...

I managed to find a solution that works for me on a Linux 4.6.0 system
with glibc, a Linux 4.6.0 system with unpatched musl and a Linux 4.4
system with patched kernel headers.

I pushed this change along with a few others that should aid in
portability to the repository now.

Feedback appreciated.

~ Jo