* libc/include/sys/unistd.h (MAXPATHLEN): Delete.
	* libc/include/sys/param.h (MAXPATHLEN): Define.
	* libc/sys/rtems/sys/param.h (MAXPATHLEN): Likewise.
	* libc/unix/getcwd.c: Include <sys/param.h> for MAXPATHLEN.
	* configure.in (enable-newlib-global-atexit): New option.
	* configure: Regenerated.
	* newlib.hin (_REENT_GLOBAL_ATEXIT): Place-holder.
	* README (enable-newlib-global-atexit): Description for
	new option.
Fix formatting