Reorganized sys functions

lib/sys/io_linux.q

@@ -0,0 +1,15 @@
+read(fd Int, address Pointer, length Int) -> Int {
+	return syscall(0, fd, address, length)
+}
+
+write(fd Int, address Pointer, length Int) -> Int {
+	return syscall(1, fd, address, length)
+}
+
+open(file Pointer, flags Int, mode Int) -> Int {
+	return syscall(2, file, flags, mode)
+}
+
+close(fd Int) -> Int {
+	return syscall(3, fd)
+}