Clean up function prototypes for cc65. (#129)

Author: tschak909

src/atari/io.c

@@ -320,4 +320,4 @@ bool io_mount_all(void)
   // return OS.dcb.dstats; // 1 = successful, anything else = error.
 }
 
-#endif /* BUILD_ATARI */
+#endif /* BUILD_ATARI */

src/atari/screen.c

@@ -373,7 +373,7 @@ void screen_select_file_display(char *p, char *f)
   screen_clear_line(FILES_START_Y - 1);
 }
 
-void screen_select_file_display_long_filename(char *e)
+void screen_select_file_display_long_filename(const char *e)
 {
   screen_puts(0, 24, e);
 }
@@ -417,7 +417,7 @@ void screen_select_file_prev(void)
   }
 }
 
-void screen_select_file_display_entry(unsigned char y, char *e, unsigned entryType)
+void screen_select_file_display_entry(unsigned char y, const char *e, unsigned entryType)
 {
 
 /*
@@ -643,7 +643,7 @@ void screen_hosts_and_devices_host_slot_empty(unsigned char hs)
   screen_append(text_empty);
 }
 
-void screen_hosts_and_devices_long_filename(char *f)
+void screen_hosts_and_devices_long_filename(const char *f)
 {
   // show_line_nums();
 }

src/atari/screen.h

@@ -73,18 +73,18 @@ void screen_hosts_and_devices_edit_host_slot(unsigned char i);
 void screen_hosts_and_devices_eject(unsigned char ds);
 void screen_hosts_and_devices_host_slot_empty(unsigned char hs);
 
-void screen_hosts_and_devices_long_filename(char *f);
+void screen_hosts_and_devices_long_filename(const char *f);
 
 void screen_show_info(int printerEnabled, AdapterConfigExtended *ac);
 
 void screen_select_file(void);
 void screen_select_file_display(char *p, char *f);
-void screen_select_file_display_long_filename(char *e);
+void screen_select_file_display_long_filename(const char *e);
 void screen_select_file_clear_long_filename(void);
 void screen_select_file_filter(void);
 void screen_select_file_next(void);
 void screen_select_file_prev(void);
-void screen_select_file_display_entry(unsigned char y, char *e, unsigned entryType);
+void screen_select_file_display_entry(unsigned char y, const char *e, unsigned entryType);
 void screen_select_file_choose(char visibleEntries);
 void screen_select_file_new_type(void);
 void screen_select_file_new_size(unsigned char k);