clib2 Code

- 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.

- Lost the __not_a_number and __infinity variables, including the
code which initialized them.

- Reading/changing the errno variable is no longer done directly, but
involves accessor functions.

- References to the HUGE_VAL quantity now involve an accessor function, too.

- Changed the manner in which the __huge_val constant is initialized by
the __math_init() function.

- We now allocate the AnchorPath used in the unistd_wildcard_expand.c
code. Also, the contents of the AnchorPath structure are no longer
modified between calls. MatchEnd() has to be sufficient.

- Moved redundant code out of the readdir()/opendir()/closedir()
functions which is not required unless the code is built for
Unix compatibility mode.

- We now allocate the AnchorPath used in the unistd_wildcard_expand.c
code. Also, the contents of the AnchorPath structure are no longer
modified between calls. MatchEnd() has to be sufficient.

- Folded duplicate code in "time_mktime.c"; also, errno is no longer
modified unless the library is built with the "CHECK_FOR_NULL_POINTERS"
option.

- Updated the ".cvsignore" file.

- Moved the date/time conversion test code around in "test.c".

- The functions in stdlib.h which require a compiler that supports the
"long long" data type are no longer prototyped if the library is built
for SAS/C.