minor V.js fixes

vlib/builtin/js/builtin.v

@@ -19,7 +19,7 @@ pub fn panic(s string) {
 }
 
 pub fn println(s string) {
-	#console.log(s)
+	#console.log(s.str)
 }
 
 pub fn eprintln(s string) {

vlib/builtin/js/string.v

@@ -17,6 +17,15 @@ fn C.strlen(s byteptr) int
 
 fn todo() { }
 
+pub fn tos(s byteptr) string {
+	len := 0
+	#len = s.length;
+	return string{
+		str: s
+		len: len
+	}	
+}	
+
 
 pub fn (a string) clone() string {
 	return a