Basics
[cu: Common Infrastructure]

Modules
	cu/diag.h: Printing and Error Reporting
	cu/inherit.h: A Framework for Multiple Inheritance
	cu/init.h: Library Initialisation
	cu/logging.h: Logging
	cu/memory.h: Memory Allocation
	cu/threadlocal.h: Thread-Local Storage Boilerplates
	cu/thread.h: Multi-Threading (Extensions to pthreads)
	cu/clos.h: Closures