obsoleting the annotate level 2 interface

[Andrew Cagney]

> I think this is what has baffled a lot of GDB users. There are something like
> 39 problem reports open for MI and only 14 closed (I'm hesitant to say this as
> I applaud the transparency of the system and I don't want to encourage
> secrecy). We don't see how the GDB developers can deprecate annotations or
> encourage users to switch to MI until it is ready.

Ah, don't be fooled by statistics.  GDB has 600 open `bugs' (out of 900) 
yet GDB still works pretty well.

Rather than look at the bugs, look at the MI testsuite and all the cases 
it verifies as working correctly.

Andrew