Clean up warnings detected by gcc.

Also re-enabled the JIT for the ARMv5te target.

Change-Id: I89fd229205e30e6ee92a4933290a7d8dca001232
diff --git a/vm/compiler/codegen/arm/LocalOptimizations.c b/vm/compiler/codegen/arm/LocalOptimizations.c
index 729486c..724fdb7 100644
--- a/vm/compiler/codegen/arm/LocalOptimizations.c
+++ b/vm/compiler/codegen/arm/LocalOptimizations.c
@@ -50,6 +50,8 @@
   return (reg1Lo == reg2Lo) || (reg1Lo == reg2Hi) || (reg1Hi == reg2Lo);
 }
 
+#if 0
+/* Debugging utility routine */
 static void dumpDependentInsnPair(ArmLIR *thisLIR, ArmLIR *checkLIR,
                                   const char *optimization)
 {
@@ -57,6 +59,7 @@
     dvmDumpLIRInsn((LIR *) thisLIR, 0);
     dvmDumpLIRInsn((LIR *) checkLIR, 0);
 }
+#endif
 
 /*
  * Perform a pass of top-down walk to