- fixed regression in 'info symbol XXXX' command (and enhanced
  presentation)
- fixed regression in line stepping
- fixed regression in & (address operator) handling
- fixed some bad module reference for local symbols
- enhanced register presentation as local variables
- added warning when launching a debuggee which isn't a Wine app
- removed the 'local' extension of display command (and check when
  setting the display whether the expr has a local binding)
- simplified exception handling, and factorized some code when
  debugger stops