Debug support for verifier rewriting.

Full instruction dumps can be enabled by setting gDebugVerify in the
file.

Change-Id: I0dca1c09f0fc1ee51e0084758f7ee041b0778c4f
diff --git a/src/dex_instruction.cc b/src/dex_instruction.cc
index a4f1bfc..029c68b 100644
--- a/src/dex_instruction.cc
+++ b/src/dex_instruction.cc
@@ -213,6 +213,7 @@
       case k11x:
       case k10t:
         return 1;
+      case k20bc:
       case k20t:
       case k22x:
       case k21t: