Move Arrays, Collections and Maps into a new library, dart:collections.

runtime/vm/object_store.h

Index: runtime/vm/object_store.h
diff --git a/runtime/vm/object_store.h b/runtime/vm/object_store.h
index 301293e6758d6821b1285a6c1744cd2afc2486a3..2a7e614abe3ffbf01003900962f9b00d8824f5df 100644
--- a/runtime/vm/object_store.h
+++ b/runtime/vm/object_store.h
@@ -362,6 +362,13 @@ class ObjectStore {
     core_impl_library_ = value.raw();
   }
 
+  RawLibrary* collections_library() const {
+    return collections_library_;
+  }
+  void set_collections_library(const Library& value) {
+    collections_library_ = value.raw();
+  }
+
   RawLibrary* math_library() const {
     return math_library_;
   }
@@ -526,6 +533,7 @@ class ObjectStore {
   RawArray* canonical_type_arguments_;
   RawLibrary* core_library_;
   RawLibrary* core_impl_library_;
+  RawLibrary* collections_library_;
   RawLibrary* math_library_;
   RawLibrary* isolate_library_;
   RawLibrary* mirrors_library_;