Resolving the issue that we can only ever have one gdbserver process
running consuming port 8086 (even if the port number is cute).
Doesn't give us anything yet but in the future will allow us to have
whole process trees running gdbservers that we can attach to.
Requires #3249 to be merged first
Library alerting has been disabled for now, and storing IR while
gdbserver is running is removed.
Otherwise no functional change.