Refactored the interface of the io package

lib/io/write.q

@@ -1,5 +1,9 @@
 import sys
 
-write(fd int, buffer []byte) -> int {
+write(buffer []byte) -> int {
+	return sys.write(std.out, buffer, len(buffer))
+}
+
+writeTo(fd int, buffer []byte) -> int {
 	return sys.write(fd, buffer, len(buffer))
 }