Remove dependency on glibc in 010-musl-compat patch as glibc does not
support _LIB_VERSION anymore in 2.27; see
https://sourceware.org/ml/libc-announce/2018/msg00000.html

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

The old scheme didn't make any sense...not that there was a scheme really.

Signed-off-by: Marcel Denia <naoir@gmx.net>

- Add patch to inhibit the libm IEEE math switch on musl
 - Add postprocessing for config.sh to the Makefile to fixup
   defines for musl, idea taken
   from http://patchwork.openembedded.org/patch/91707/

This is the least invasive approach I could come up to fix the build
failure asap. Another possibility is maintaining yet another set of
musl specific architecture config files, but I think that this introduces
a lot of maintenance overhead.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>