Update Makefile to modern standards.
Switched to local tarballs..xz archives are smaller. The .gz archive that
codeload comes with is 85MB.
Replaced PKG_INSTALL with CMAKE_INSTALL to get rid of Build/InstallDev.
Added PKG_BUILD_PARALLEL for faster compilation.
Removed inactive maintainer.
Added uClibc-ng patches to fix compilation.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
