Add some more instruction support to optimizing compiler.

This adds a few more DEX instructions to the optimizing compiler's
builder (constants, moves, if_xx, etc).

Also:
* Changes the codegen for IF_XX instructions to use a condition
  rather than comparing a value against 0.
* Fixes some instructions in the ARM disassembler.
* Fixes PushList and PopList in the thumb2 assembler.
* Switches the assembler for the optimizing compiler to thumb2
  rather than ARM.

Change-Id: Iaafcd02243ccc5b03a054ef7a15285b84c06740f
diff --git a/compiler/optimizing/code_generator_arm.h b/compiler/optimizing/code_generator_arm.h
index 712a24c..0e2a079 100644
--- a/compiler/optimizing/code_generator_arm.h
+++ b/compiler/optimizing/code_generator_arm.h
@@ -20,7 +20,7 @@
 #include "code_generator.h"
 #include "nodes.h"
 #include "parallel_move_resolver.h"
-#include "utils/arm/assembler_arm32.h"
+#include "utils/arm/assembler_thumb2.h"
 
 namespace art {
 namespace arm {
@@ -180,7 +180,7 @@
   LocationsBuilderARM location_builder_;
   InstructionCodeGeneratorARM instruction_visitor_;
   ParallelMoveResolverARM move_resolver_;
-  Arm32Assembler assembler_;
+  Thumb2Assembler assembler_;
 
   DISALLOW_COPY_AND_ASSIGN(CodeGeneratorARM);
 };