clib2 Code

- Added usleep(), and created wrapper code that both sleep() and
usleep() can use.

- The timeval definition should work with OS 3.1 compatible header files again.

This commit was manufactured by cvs2svn to create tag 'V1_176'.

Bumped revision

Compiling with soft-float now ommits storing the FPU registers

Some adjustments so that the function is available even in non-FPU code

Added soft-float and small data targets

- Added strtoll() and strtoull(), with further changes to <limits.h>
and <stdlib.h>.

- Changed the stack layout used for the StackSwap() call.

- Cleaned up the commented-out sections that deal with the SAS/C
profiling code.

- Fixed the broken umask() function definition for GCC 68k and SAS/C: it
does have a return value...