ART: Make run-tests more verbose

Make run-tests log ERROR level on host. Adjust some internal LOG(ERROR)
to LOG(WARNING). Add check scripts to adjust for other LOG(ERROR)
messages.

Bug: 18713034
Change-Id: I2a3e055baa6a0e31f106364c300c20963a59ed94
diff --git a/runtime/class_linker.cc b/runtime/class_linker.cc
index 3592d2c..8609807 100644
--- a/runtime/class_linker.cc
+++ b/runtime/class_linker.cc
@@ -3511,7 +3511,7 @@
           StringPrintf("Rejecting class %s that attempts to sub-class erroneous class %s",
                        PrettyDescriptor(klass.Get()).c_str(),
                        PrettyDescriptor(super.Get()).c_str()));
-      LOG(ERROR) << error_msg  << " in " << klass->GetDexCache()->GetLocation()->ToModifiedUtf8();
+      LOG(WARNING) << error_msg  << " in " << klass->GetDexCache()->GetLocation()->ToModifiedUtf8();
       Handle<mirror::Throwable> cause(hs.NewHandle(self->GetException(nullptr)));
       if (cause.Get() != nullptr) {
         self->ClearException();
@@ -3584,7 +3584,7 @@
       }
     }
   } else {
-    LOG(ERROR) << "Verification failed on class " << PrettyDescriptor(klass.Get())
+    LOG(WARNING) << "Verification failed on class " << PrettyDescriptor(klass.Get())
         << " in " << klass->GetDexCache()->GetLocation()->ToModifiedUtf8()
         << " because: " << error_msg;
     self->AssertNoPendingException();