* generic save state dialog code moved to the save_restore_handler() in gui.cc
* the suspend button in the wxWidgets port now works and uses the new code
* old wxWidgets save state code removed (not thread-safe)
- wxWidgets HandleAskParamString() method fixed for wxGTK (now using a temporary
string array instead of a pointer)
- for the BrowseDir() function Bochs for win32 needs to be linked with SHELL32.DLL
(currently used for the save/restore support only)
- save/restore support symbol name changed