Replaced flagalrm() timers with another technique to check for timeouts.

This allowed removing the p_flagarlm timer from the kernel's process table.
Furthermore, I merged p_syncalrm and p_signalrm into p_alarm_timer to save
even more space. Note that processes can no longer have both a signal and
synchronous alarm timer outstanding as of now.

include/minix/config.h

@@ -47,12 +47,11 @@
 #define NR_BUF_HASH	 512	/* size of buf hash table; MUST BE POWER OF 2*/
 #endif
 
-/* Defines for kernel configuration. */
+/* Defines for driver and kernel configuration. */
 #define AUTO_BIOS          0	/* xt_wini.c - use Western's autoconfig BIOS */
 #define LINEWRAP           1	/* console.c - wrap lines at column 80 */
 #define ALLOW_GAP_MESSAGES 1	/* proc.c - allow messages in the gap between
 				 * the end of bss and lowest stack address */
-#define KMESS_BUF_SIZE   512   	/* size in bytes for kernel messages */
 
 /* Number of controller tasks (/dev/cN device classes). */
 #define NR_CTRLRS          2

include/minix/type.h

@@ -119,14 +119,4 @@ struct machine {
   int vdu_vga;
 };
 
-/* The kernel outputs messages in a local buffer, which can be requested and
- * printed by the TTY driver. The buffer structure is defined here. 
- */
-struct kmessages {
-  int km_next;				/* next index to write */
-  int km_size;				/* current size in buffer */
-  char km_buf[KMESS_BUF_SIZE];		/* buffer for messages */
-};
-
-
 #endif /* _TYPE_H */

include/minix/utils.h

@@ -43,9 +43,9 @@ _PROTOTYPE(int fkey_ctl, (int fkey_code, int enable_disable)		);
 _PROTOTYPE(void server_report, (char *who, char *mess, int num)		);
 _PROTOTYPE(void server_panic, (char *who, char *mess, int num)		);
 
-#define get_own_proc_nr(where) get_proc_nr((where), NULL)
 _PROTOTYPE(int get_proc_nr, (int *proc_nr, char *proc_name) );
 
+_PROTOTYPE(int getuptime, (clock_t *ticks));
 _PROTOTYPE(int tick_delay, (clock_t ticks));
 
 #endif /* _EXTRALIB_H */