ART: Add PackedSwitch support to the optimizing compiler

Add simple packed-switch support through chained IFs.

Now enables compiled versions of 015-switch and 095-switch-MAX_INT.

Change-Id: I17cc8d659d1dd2d64227851c23998c04367e8cf5
diff --git a/compiler/optimizing/builder.h b/compiler/optimizing/builder.h
index 8519bcb..0e46899 100644
--- a/compiler/optimizing/builder.h
+++ b/compiler/optimizing/builder.h
@@ -202,6 +202,10 @@
                       uint16_t type_index,
                       uint32_t dex_pc);
 
+  // Builds an instruction sequence for a packed switch statement. This will punt to the interpreter
+  // for a switch with a full 64k set of cases.
+  bool BuildPackedSwitch(const Instruction& instruction, uint32_t dex_pc);
+
   ArenaAllocator* const arena_;
 
   // A list of the size of the dex code holding block information for