Load devkit when using rake-compiler
Load devkit when using rake-compiler

This ensures that Windows knows where to find "make" and friends.

telekomatrix/ruby-ll,YorickPeterse/ruby-ll,YorickPeterse/ruby-ll,YorickPeterse/ruby-ll,telekomatrix/ruby-ll,telekomatrix/ruby-ll,YorickPeterse/ruby-ll,telekomatrix/ruby-ll