Removing globbing. Still builds
Trim out minizip and eris from the list of hardcoded files
Merged trunk
Keep track of known breakage
Broke everything by attempting to split out src/io
- Added a wl_library cmake function to define a common way of building widelands.
- Moved some files into a base/ module, which is the most fundamental (depending
  on nothing inside widelands).
Small changes.
Split out codecheck execution into a function and make it work again albeit a bit rough in the edges. Worst problem: totally lacking cross-platform support at the moment!
Indent the headers
A simpler approach to checking code. The success file is now codecheck_<hash of
file> which does not need to mess with path separators.
Fixed build.
Added a TODO.
Removed some stuff that seems unused.
Move file which is only included one place to reduce scope
Removed TODOs which have been addressed
Move unique_window_handler into wui
Move workarea_info into logic
Move description_maintainer into logic
Adjust paths to fix codecheck issues
Sound treated as a separate library