Incorporate bsdmake into buildsystem and reorganize libs

lib/libsys/sys_readbios.c

@@ -0,0 +1,15 @@
+#include "syslib.h"
+
+PUBLIC int sys_readbios(address, buf, size)
+phys_bytes address;		/* Absolute memory address */
+void *buf;			/* Buffer to store the results */
+size_t size;			/* Amount of data to read */
+{
+/* Read data from BIOS locations */
+  message m;
+
+  m.RDB_SIZE = size;
+  m.RDB_ADDR = address;
+  m.RDB_BUF = buf;
+  return(_kernel_call(SYS_READBIOS, &m));
+}