Stop on solib load

[Vladimir Prus]

Hamish,
on IRC, you've asked:

   <blackarrow> volodya: can we remove the stop at each shared lib loading stuff now?

In fact, I believe it was removed in revision 748808. There was:

   queueCmd(new GDBCommand(GDBMI::GdbSet, "stop-on-solib-events 1"));

which is now gone. I'm aware of one remnant of that logic -- where we still ignore
any error GDB reports for -break-insert operation -- while now we should not.

Do you have some other code in mind?

- Volodya