Removed now unnecessary gcc10 patch.

Removed neon patch. It's now upstream.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Split musl patch into multiple small ones. Much easier to reason about.

Removed stack protector patch. This is not an issue anymore.

Removed NLS support. There seems to be a linking issue as
libiconv-stub does not have a shared library component.

Signed-off-by: Rosen Penev <rosenp@gmail.com>