generate proper makefile for subdirectories
Merge pull request #39 from yast/makefile_for_subdir

generate proper makefile for subdirectories
yast2-core can be installed from YaST:Head:ruby OBS project

instead of manual compilation
Merge pull request #44 from lslezak/yast2_core_obs

yast2-core can be installed from YaST:Head:ruby OBS project