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

CMake supports Ninja for faster compilation and less bugginess when it
comes to parallel compilation. That is, some CMake packages currently
have PKG_BUILD_PARALLEL set where it is not needed with ninja.

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

This adds a host as well as a target package.

ninja.mk is provided to execute ninja.

The two patches have been taken from upstream to fix compile issues.

Signed-off-by: Andre Heider <a.heider@gmail.com>