* Remove _isAttached member var and isAttached method
* Engines now always call the onFrame method; whether it does
something is decided by the debugger class resp. its subclasses
* Make detach() protected instead of private, so that subclasses
can invoke it
* Remove _detach_now member var (call detach() instead).
* Rename _frame_countdown to _frameCountdown and properly
document it.
* Add more doxygen comments
* Cleanup
svn-id: r50963
* Moved Common::Debuggger to GUI::Debugger (mainly to satisfy linker
restrictions)
* Change the base Debugger class to *not* be a template class anymore;
instead, a thin (template based) wrapper class is used to hook up
debugger commands
* Removed duplicate Cmd_Exit and Cmd_Help methods in favor of a single
version of each in GUI::Debugger
* New Cmd_Help doesn't word wrap after 39/78 chars, but rather queries
the console to determine when to wrap
* Debugger::preEnter and postEnter aren't pure virtual anymore
svn-id: r23890
