Fix valac preprocessor conditionals
Two preprocessor conditionals for vala source files were defined in config.h, which is not picked up during vala compilation. Now, pass the defines as command line options to valac. Fixes #264 (closed)
Two preprocessor conditionals for vala source files were defined in config.h, which is not picked up during vala compilation. Now, pass the defines as command line options to valac. Fixes #264 (closed)