Move GL-renderer into sub-directory
The GL-renderer is moved into a sub-directory to make it stand out:
- it builds into a plugin of its own
- it will contain more source code files in the future
The directory naming sets the stage for adding new renderers, although none are planned at the moment.
The pixman-renderer won't be moved because it is built in to libweston core.
See #219 (closed).
Edited by Pekka Paalanen