Get rid of static module allocation, do it in code.

src/ast.cc

Index: src/ast.cc
diff --git a/src/ast.cc b/src/ast.cc
index 52990b8feedeb93109e7465913ec746c64b24c6f..107b5408735fde95b19274226ff78dc49988bdf3 100644
--- a/src/ast.cc
+++ b/src/ast.cc
@@ -103,6 +103,7 @@ VariableProxy::VariableProxy(Isolate* isolate,
 void VariableProxy::BindTo(Variable* var) {
   ASSERT(var_ == NULL);  // must be bound only once
   ASSERT(var != NULL);  // must bind
+  ASSERT(!FLAG_harmony_modules || interface_->IsUnified(var->interface()));
   ASSERT((is_this() && var->is_this()) || name_.is_identical_to(var->name()));
   // Ideally CONST-ness should match. However, this is very hard to achieve
   // because we don't know the exact semantics of conflicting (const and
@@ -1070,16 +1071,14 @@ REGULAR_NODE(CallNew)
 // LOOKUP variables only result from constructs that cannot be inlined anyway.
 REGULAR_NODE(VariableProxy)
 
-// We currently do not optimize any modules. Note in particular, that module
-// instance objects associated with ModuleLiterals are allocated during
-// scope resolution, and references to them are embedded into the code.
-// That code may hence neither be cached nor re-compiled.
+// We currently do not optimize any modules.
 DONT_OPTIMIZE_NODE(ModuleDeclaration)
 DONT_OPTIMIZE_NODE(ImportDeclaration)
 DONT_OPTIMIZE_NODE(ExportDeclaration)
 DONT_OPTIMIZE_NODE(ModuleVariable)
 DONT_OPTIMIZE_NODE(ModulePath)
 DONT_OPTIMIZE_NODE(ModuleUrl)
+DONT_OPTIMIZE_NODE(ModuleStatement)
 DONT_OPTIMIZE_NODE(WithStatement)
 DONT_OPTIMIZE_NODE(TryCatchStatement)
 DONT_OPTIMIZE_NODE(TryFinallyStatement)