Refactored the interface of the io package

lib/io/io.q

@@ -1,17 +1,3 @@
-import sys
-
-in(buffer []byte) -> int {
-	return sys.read(std.in, buffer, len(buffer))
-}
-
-out(buffer []byte) -> int {
-	return sys.write(std.out, buffer, len(buffer))
-}
-
-error(buffer []byte) -> int {
-	return sys.write(std.err, buffer, len(buffer))
-}
-
 const {
 	std {
 		in 0

lib/io/read.q

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

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))
 }