Add a catarea bin tool

Untouched as of 2004, can be useful sometimes.

src/bin/catarea.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <OS.h>
+
+int main(int argc, char **argv)
+{
+	area_id area, cloned;
+	char *ptr, *p;
+	area_info ai;
+
+	if (argc < 2) {
+		printf("catarea areaid\n");
+		return 1;
+	}
+	area = atoi(argv[1]);
+
+	cloned = clone_area("cloned for catarea", (void **)&ptr, B_ANY_ADDRESS, B_READ_AREA, area);
+	get_area_info(cloned, &ai);
+	//fprintf(stderr, "copy of bios: size=0x%08lx\n", ai.size);
+	write(1, ptr, ai.size);
+	delete_area(cloned);
+	return 0;
+}