Sysvipc

A beta version of my SystemV IPC (inter process communication) implementation
for AmigaOS 4.

As a beta version it is mostly complete, but some smaller things
are unfinished or need more polish. Testing is also somewhat limited
as of yet.

In the tradition of open source, however, I decided to try and release
early so anyone who finds this useful can try it. Since this has now
reached beta stage, any comments, bug-reports or suggestions are welcome.

New in beta 1:
   - Documentation! An autodoc for sysvipc.library is supplied.
   - Installer script.
   - ipcrm
   - SHM_LOCK and SHM_UNLOCK extensions.
   - A few minor errors fixed.

New in alpha 3:
   - Semaphores support the SEM_UNDO flag.
   - ftok() works instead of crashing horribly.
   - Opening the library does not cause memory corruption. (Hey, it's alpha
software! :-)

New in alpha 2:
   - Semaphores (except semtimedop())
   - ftok()
   - Reworked error reporting
   - ipcs is (somewhat) more X/Open compliant
   - Avoid conflicts with key_t and struct timespec for newlib.

   -Peter