ScriptC's mEnvironment.mIsThreadable needs to survive caching and then caching-reloading.

Change-Id: Id79931ce1a15c7c81aefee8b963958d97e76e6de
diff --git a/lib/bcc/CodeEmitter.h b/lib/bcc/CodeEmitter.h
index 7096bcf..6cb0a07 100644
--- a/lib/bcc/CodeEmitter.h
+++ b/lib/bcc/CodeEmitter.h
@@ -147,11 +147,11 @@
     llvm::MCInstPrinter *mpIP;
 #endif
 
+  public:
     // Resolver to undefined symbol in CodeEmitter
     BCCSymbolLookupFn mpSymbolLookupFn;
     void *mpSymbolLookupContext;
 
-  public:
     // Will take the ownership of @MemMgr
     explicit CodeEmitter(CodeMemoryManager *pMemMgr);