Implemented last-chance recovery that saves the current and spare page. (issue 97)

Tested OK on Windows when crashing Contour (issue 119)
Doesn't handle frozen states (when killed in task manager), I'll have to look further.


git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@628 416bcca6-2ee7-4201-b75f-2eb2f807beb1

loadsave.h

@@ -40,3 +40,5 @@ typedef struct {
 // Tableau des formats connus
 extern T_Format FormatFichier[NB_FORMATS_CONNUS];
 
+// Fonction de sauvegarde en cas de probleme
+void Image_emergency_backup(void);