Change name from RTTypeid to __typeid

Author: andralex

src/object.d

@@ -427,7 +427,7 @@ class TypeInfo
 /*
 Run-time type information for scalar types (int for now).
 */
-template RTTypeid(T)
+template __typeid(T)
 if (is(T == int))
 {
     class Impl : TypeInfo
@@ -490,12 +490,12 @@ if (is(T == int))
     }
 
     // On-demand singleton object in static storage
-    immutable RTTypeid = new Impl;
+    immutable __typeid = new Impl;
 }
 
 unittest
 {
-    alias id = RTTypeid!int;
+    alias id = __typeid!int;
     static assert(id == id && id <= id && id >= id);
     static assert(id.toString == "int");
     int a = 42, b = 42, c = 43;