linux, threads and auto-solib-add

[Andrew Cagney]

> I used the word "needless" above because I think there's a perfectly
> reasonable way that the user can achieve the same effect without
> modifying gdb.  Simply place the following commands in a suitable
> .gdbinit file:
> 
>     set auto-solib-add off
>     define hook-stop
>     sharedlibrary libpthread
>     end
> 
> The ``hook-stop'' definition above will attempt to load the libpthread
> shared library every time gdb stops.  Of course, once a shared library
> has been loaded, future attempts to load the shared library are
> effectively no-ops since gdb knows that the library is already loaded.

Hey, wow!  Consider adding this to the documentation.

Andrew