Merge jamppa@bk-internal.mysql.com:/home/bk/mysql-4.0

/* do not use the extended time in LibC sys\stat.h */

#define _POSIX_SOURCE

/* Kernel call on NetWare that will only yield if our time slice is up */

void kYieldIfTimeSliceUp(void);

/* Some macros for portability */

#define set_timespec(ABSTIME,SEC) { (ABSTIME).tv_sec=time(NULL)+(SEC); (ABSTIME).tv_nsec=0; }

/* extra protection against CPU Hogs on NetWare */

#define NETWARE_YIELD kYieldIfTimeSliceUp()

#define NETWARE_YIELD pthread_yield()

/* Screen mode for help texts */

#define NETWARE_SET_SCREEN_MODE(A) setscreenmode(A)