ClassLinker can now FindClass all libcore classes

Summary:
- added ClassLinkerTest/LibCore test of finding all libcore classes
- fixed bug in LinkInterfaceMethods appending mirant methods to vtable_
- fixed bug in LinkVirtualMethods allocating subclass vtable_
- fixed mmap bug in MarkStack::Init
- bumped default (and max) heap sizes to handle ClassLinkerTest/LibCore
- made ObjectArray a templated class
- heap allocate Class::vtable_
- "mm test-art" and "mm test-art-target" added
- new is_host_ for use by tests

Details:

    Added support for "mm test-art" and "mm test-art-target" in addition to test-art-host
	Android.mk

    Made ObjectArray a template class for clearer declarations and to
    remove need the need for down_cast.

	src/object.h
	src/object_test.cc
	src/class_linker.cc
	src/class_linker.h
	src/dex_cache.cc
	src/dex_cache.h
	src/dex_cache_test.cc
	src/mark_sweep.cc

    Made Class::vtable_ a heap allocated ObjectArray<Method>

	src/class_linker.cc

    Fix bug in ClassLinker::LinkInterfaceMethods where we were not
    extending the vtable_ before appending miranda methods.

	src/class_linker.cc

    Changed all uses of DexFile* in ClassLinker to be const

	src/class_linker.cc
	src/class_linker.h

    Fix bug in ClassLinker::LinkVirtualMethods where we were using
    NumVirtualMethods vs vtable->GetLength when determining new max
    vtable_ length.

	src/class_linker.cc

    New ClassLinkerTest/LibCore that enumerates the libcore dex file
    and tries to FindClass every descriptor found.

	src/class_linker_test.cc

    Added if_host_ check for host only tests. In the future will use
    for picking proper location of files, etc. on host vs target.

	src/common_test.h

    Fixed test to use ClassLinker::AllocDexCache

	src/dex_cache_test.cc

    Fixed fooIds comments to foo_ids_

	src/dex_file.h

    Bumped default heap size (and max as well) to make ClassLinkerTest/LibCore run

	src/heap.h

    Fixed bug where we were not using MAP_ANONYMOUS for MarkStack
    allocation found running ClassLinkerTest/LibCore.

	src/mark_stack.cc

Change-Id: I204e2ec7205210e2b60f5b81d126ab6e1da5a71c
diff --git a/src/class_linker.h b/src/class_linker.h
index a2f2770..086234d 100644
--- a/src/class_linker.h
+++ b/src/class_linker.h
@@ -7,6 +7,7 @@
 #include <utility>
 #include <vector>
 
+#include "heap.h"
 #include "macros.h"
 #include "dex_file.h"
 #include "thread.h"
@@ -27,7 +28,10 @@
   StaticField* AllocStaticField();
   InstanceField* AllocInstanceField();
   Method* AllocMethod();
-  ObjectArray* AllocObjectArray(size_t length);
+  template <class C> ObjectArray<C>* AllocObjectArray(size_t length) {
+    return Heap::AllocObjectArray<C>(object_array_class_, length);
+  }
+
 
   // Finds a class by its descriptor name.
   // If dex_file is null, searches boot_class_path_.
@@ -49,7 +53,7 @@
 
   String* ResolveString(const Class* referring, uint32_t string_idx);
 
-  void RegisterDexFile(DexFile* dex_file);
+  void RegisterDexFile(const DexFile* dex_file);
 
  private:
   ClassLinker() {}
@@ -144,9 +148,9 @@
 
   void CreateReferenceOffsets(Class* klass);
 
-  std::vector<DexFile*> boot_class_path_;
+  std::vector<const DexFile*> boot_class_path_;
 
-  std::vector<DexFile*> dex_files_;
+  std::vector<const DexFile*> dex_files_;
 
   std::vector<DexCache*> dex_caches_;
 
@@ -183,7 +187,7 @@
   Class* field_array_class_;
   Class* method_array_class_;
 
-  ObjectArray* array_interfaces_;
+  ObjectArray<Class>* array_interfaces_;
   InterfaceEntry* array_iftable_;
 
   FRIEND_TEST(ClassLinkerTest, ProtoCompare);