Initial commit for core dump.

We can create a dummy core file when gpe occurs.
	modified:   executer/kernel/mcctrl.h
	modified:   executer/kernel/syscall.c
	modified:   kernel/include/syscall.h
	modified:   kernel/mem.c

executer/kernel/mcctrl.h

@@ -53,6 +53,8 @@
 
 #define DO_USER_MODE
 
+#define	__NR_coredump			999
+
 struct ikc_scd_packet {
 	int msg;
 	int ref;