Don't declare things in more than one place. Move some declarations

between headers.  Code is now fully prototyped and compiles cleanly
with gcc -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs
-Wredundant-decls.  Closes #723788.

src/lib/commands/rea.c

@@ -44,6 +44,7 @@
 #include "file.h"
 #include "tel.h"
 #include "commands.h"
+#include "optlist.h"
 
 #include <stdio.h>
 #include <fcntl.h>

src/lib/common/mailbox.c

@@ -33,6 +33,7 @@
 
 #include "misc.h"
 #include "tel.h"
+#include "optlist.h"
 #include <stdio.h>
 
 s_char *

src/lib/lwp/lwpint.h

@@ -85,7 +85,6 @@ typedef struct {
 /* internal routines */
 void lwpAddTail(struct lwpQueue *, struct lwpProc *);
 struct lwpProc *lwpGetFirst(struct lwpQueue *);
-void lwpReschedule(void);
 void lwpReady(struct lwpProc *);
 void lwpOnalarm(void);
 

src/lib/subs/wu.c

@@ -43,6 +43,7 @@
 #include "file.h"
 #include "player.h"
 #include "server.h"
+#include "optlist.h"
 #include "prototypes.h"
 
 static struct telstr last_tel[MAXNOC];

src/lib/update/anno.c

@@ -42,6 +42,7 @@
 #include <unistd.h>
 #endif
 #include "update.h"
+#include "optlist.h"
 #include "common.h"
 
 void

src/lib/update/main.c

@@ -46,6 +46,7 @@
 #include "update.h"
 #include "common.h"
 #include "optlist.h"
+#include "server.h"
 #include <stdlib.h>
 #if !defined(_WIN32)
 #include <sys/time.h>