clib2 Code

- Added the missing string pointer.

- Added pathconf() and fpathconf() as contributed by Peter Bengtsson. Thank you very much!

- Added sysinfo() as contributed by Peter Bengtsson. Thank you very much!

- Added ftime(), ulimit(), getrlimit() and setrlimit() as contributed by
Peter Bengtsson. Thank you very much!

- Added ftime(), as contributed by Peter Bengtsson. Thank you very much!

- Added the missing S_ISSOCKET() macro to <sys/stat.h>. Note that this
is not actually a POSIX feature.

- Added fmin(), fminf(), fmax() and fmaxf() to the build makefiles.
Somehow I must have forgotten about them :-(

- Added the constructor begin/end files to the OS4 build makefile for
the skeleton library.

- select() and waitselect() can now be called without any file descriptor
sets to work with, as some software does which uses select() in place
of sleep().

- The <sys/ioctl.h> header file now includes both <sys/select.h> and
<sys/filio.h> for better compatibility with the TCP/IP stack header
files.

- Added a couple more program names to the list.

- Added the global variable __expand_wildcard_args which can be used
to disable wildcard pattern expansion of command line parameters when
linked against "libunix.a". Note that this has no effect on the "regular"
libc.a behaviour.