declare constant function parameters const (as well as constant function return values)

clients/lcdexec/lcdexec.c

@@ -175,9 +175,9 @@ int process_command_line(int argc, char **argv)
 	return error;
 }
 
-int process_configfile(char * configfile)
+int process_configfile(char *configfile)
 {
-	char * tmp;
+	const char *tmp;
 
 	if (configfile == NULL)
 		configfile = DEFAULT_CONFIGFILE;

clients/lcdexec/menu.c

@@ -21,7 +21,7 @@
 #include "menu.h"
 
 /* recursively read the menu hierarchy */
-MenuEntry *menu_read(MenuEntry *parent, char *name)
+MenuEntry *menu_read(MenuEntry *parent, const char *name)
 {
 	static int id = 0;
 
@@ -50,7 +50,7 @@ MenuEntry *menu_read(MenuEntry *parent, char *name)
 		
 		if (config_get_string(name, "Entry", 0, NULL) != NULL) {
 			MenuEntry **addr = &me->entries;
-			char *entryname;
+			const char *entryname;
 			int index = 0;
 			
 			// it is a sub-menu

clients/lcdexec/menu.h

@@ -41,7 +41,7 @@ typedef struct menu_entry {
 } MenuEntry;
 
 
-MenuEntry *menu_read(MenuEntry *parent, char *name);
+MenuEntry *menu_read(MenuEntry *parent, const char *ame);
 int menu_sock_send(MenuEntry *me, MenuEntry *parent, int sock);
 MenuEntry *menu_find_by_id(MenuEntry *me, int id);
 const char *menu_command(MenuEntry *me);