Implement parsing and resolving of type-variables.

frog/minfrog

Index: frog/minfrog
diff --git a/frog/minfrog b/frog/minfrog
index 1a14f317ad80bad12951cfc22396af1ad61ac107..a51ef7146a2d67cdf87570144da972626c4fa5f7 100755
--- a/frog/minfrog
+++ b/frog/minfrog
@@ -364,7 +364,7 @@ NoSuchMethodException.prototype.toString = function() {
     sb.add(this._arguments.$index(i));
   }
   if (null == this._existingArgumentNames) {
-    return $add$($add$(("NoSuchMethodException : method not found: '" + this._functionName + "'\n"), ("Receiver: " + this._receiver + "\n")), ("Arguments: [" + sb + "]"));
+    return (("NoSuchMethodException : method not found: '" + this._functionName + "'\n") + ("Receiver: " + this._receiver + "\n") + ("Arguments: [" + sb + "]"));
   }
   else {
     var actualParameters = sb.toString();
@@ -377,7 +377,7 @@ NoSuchMethodException.prototype.toString = function() {
       sb.add(this._existingArgumentNames.$index(i));
     }
     var formalParameters = sb.toString();
-    return $add$($add$($add$("NoSuchMethodException: incorrect number of arguments passed to ", ("method named '" + this._functionName + "'\nReceiver: " + this._receiver + "\n")), ("Tried calling: " + this._functionName + "(" + actualParameters + ")\n")), ("Found: " + this._functionName + "(" + formalParameters + ")"));
+    return ("NoSuchMethodException: incorrect number of arguments passed to " + ("method named '" + this._functionName + "'\nReceiver: " + this._receiver + "\n") + ("Tried calling: " + this._functionName + "(" + actualParameters + ")\n") + ("Found: " + this._functionName + "(" + formalParameters + ")"));
   }
 }
 NoSuchMethodException.prototype.toString$0 = NoSuchMethodException.prototype.toString;