clib2 Code

- Replaced the plain text documentation with HTML versions.

- Fixed a compiler problem in the socket setup.

- Feature freeze!

- In the thread-safe variant, the library now tries to allow
multiple concurrent callers to use the socket functions. Note
that this works only with the Roadshow TCP/IP stack, and the
results with other TCP/IP stacks are rather unpredictable.

- Rewrote the code that allocates the file descriptor and file
buffer tables so that all the memory allocations are in one
place and it's possible to specify exactly how many table
entries are required at a time.

- Creation and initialization of semaphores now uses the AmigaOS4
specific functions for this purpose, if available.

- Added a very simple test program, just to see how much of the library
it will pull in when linked.

- Added uname command, as contributed by Peter Bengtsson. Thank you very much!

- Fixed the OS4 specific build makefile.

- Moved the signal semaphore allocation/initialization/deallocation
into a dedicated module. This also has the advantage that it's
harder to break code by accidentally forgetting to call
InitSemaphore() after having allocated the memory for it.

- Added the missing header files required to rebuild ftw_ftw.c and
ftw_nftw.c.