Modified const and extern to always use blocks

lib/io/io.q

@@ -1,11 +1,5 @@
 import sys
 
-std const {
-	in 0
-	out 1
-	err 2
-}
-
 in(buffer []byte) -> int {
 	return sys.read(std.in, buffer, len(buffer))
 }
@@ -24,4 +18,12 @@ read(fd int, buffer []byte) -> int {
 
 write(fd int, buffer []byte) -> int {
 	return sys.write(fd, buffer, len(buffer))
+}
+
+const {
+	std {
+		in 0
+		out 1
+		err 2
+	}
 }