Optimizing: Tag arena allocations in HGraph.

Replace GrowableArray with ArenaVector in HGraph and related
classes HEnvironment, HLoopInformation, HInvoke and HPhi,
and tag allocations with new arena allocation types.

Change-Id: I3d79897af405b9a1a5b98bfc372e70fe0b3bc40d
diff --git a/runtime/base/arena_allocator.cc b/runtime/base/arena_allocator.cc
index a36b0fb..337df38 100644
--- a/runtime/base/arena_allocator.cc
+++ b/runtime/base/arena_allocator.cc
@@ -57,14 +57,23 @@
   "STL          ",
   "Graph        ",
   "BasicBlock   ",
+  "BlockList    ",
+  "RevPostOrder ",
+  "LinearOrder  ",
+  "ConstantsMap ",
   "Predecessors ",
   "Successors   ",
   "Dominated    ",
   "Instruction  ",
+  "InvokeInputs ",
+  "PhiInputs    ",
   "LoopInfo     ",
+  "LIBackEdges  ",
   "TryCatchInf  ",
   "UseListNode  ",
   "Environment  ",
+  "EnvVRegs     ",
+  "EnvLocations ",
   "MoveOperands ",
   "CodeBuffer   ",
   "StackMaps    ",