clib2 Code

- Simplified the fcntl() code to use the varargs functions more carefully.
Also, the file descriptor duplication code no longer uses a goto to
deliver its result.

- Major, major changes! Moved most of the monolithic code out of
the file descriptor hook and into the respective functions,
such as dup2(), fchmod(), fchown(), fcntl(), fdatasync(), fstatfs(),
fsync(), ftruncate() and lseek(). Code which is not strictly
required will no longer find its way into your programs if you
link with the updated library.

NOTE: these changes require that the entire library is rebuilt!

- Moved the slash translation code around a bit more. Now ".//" comes out as
"" rather than ":".

- Rewrote the __translate_unix_to_amiga_path_name() function to
translate patterns such as "foo/bar/../../baz" properly, and to
use strlen() less.

- Small changes to make this build properly for OS4.

This commit was manufactured by cvs2svn to create tag 'V1_188'.

- Tweaked the build makefiles to produce fewer meaningless warnings.

- Added the fsync() and fdatasync() functions and the <stdint.h> and
<inttypes.h> header files contributed by Peter Bengtsson. Thank
you very much!

- The library no longer sends ACTION_DISK_INFO packets to the console
handler. The side-effects were too varied and irritating after all.

- Added some extra documentation on the WBStartup variable.