Hello,

This modifies thread-db.c so that reports when libthread_db has been 
loaded and when it is being used vis:

The load ...

Loading libthread_db library "libthread_db.so.1"
GNU gdb 2003-08-05-cvs
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU ....
(gdb)

The use ...

(gdb) run
Starting program: 
/home/cagney/PENDING/2003-08-05-warn-thread-db/N-x86_64-unknow
n-linux-gnu/gdb/testsuite/gdb.threads/pthreads
Threaded debugging using libthread_db enabled.
[New Thread 182894192832 (LWP 23928)]
[Switching to Thread 182894192832 (LWP 23928)]

Thoughts?

Perhaphs the enabled message should be in []?
Should the "Loading" message come after the (C) notice, or the (C) put 
before the modules are initialized?
Anyone know of a way of finding the exact actual libthread_db version so 
that can be printed as well?

If that's resolved, ok for 6.0 or mainline?

Andrew