Enable bitcode verification for debug builds

Turn bitcode function verification on for debug Quick and
Portable builds.  Also in this CL, some sanity checking for
the dex2pc table and a temporary workaround for excessive filename
lengths for bitcode file dumps.

Change-Id: I430ed28824b078c03be7826cb13876cdcb8a0fec
diff --git a/src/compiler/CompilerIR.h b/src/compiler/CompilerIR.h
index 434320d..593fce5 100644
--- a/src/compiler/CompilerIR.h
+++ b/src/compiler/CompilerIR.h
@@ -576,6 +576,7 @@
    */
   int liveSReg;
 #endif
+  std::set<uint32_t> catches;
   int* opcodeCount;    // Count Dalvik opcodes for tuning
 };