clib2 Code

- Updated the build rules for use with GCC 4.2.x

- Added a workaround for the baserel build flavour, which requires a specific
GCC version, e.g. 4.0.4 or earlier.

- The memory allocated by malloc() and friends is now of type MEMF_PRIVATE
under OS4 and beyond. The AmigaOS 2.x/3.x compatible code will still
use MEMF_ANY in the same situation, though. Other uses of MEMF_ANY have
been replaced as well where MEMF_PRIVATE would have made better sense.

- I/O buffers allocated are now aligned according to the CPU cache line size,
if the operating system can supply that detailed information.

- Elaborated on the unidirectional/bidirectional PIPE: issues.

- stdlib_unsetenv.c needs stdio_headers.h to compile properly.

- It's iswpunct() and not iswpunc().

- unsetenv() now returns a status value.

- Corrected the function prototype for wcspbrk().

- Added function prototypes for mbrtowc_l(), wcscoll_l(), wcscspn() and wcsrchr().

- Switched to BSD style options for the "cp" command, as used in the build
makefiles and the archive build script (that is: 'cp -a' becomes 'cp -p'
and 'cp -pR', depending upon the specific context).

This commit was manufactured by cvs2svn to create tag 'V1_203'.

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