Fix warnings:
cfg-common.h:340: warning: redundant redeclaration of 'quiet'
mplayer.c:85: warning: previous definition of 'quiet' was here
cfg-common.h:341: warning: redundant redeclaration of 'verbose'
mp_msg.h:6: warning: previous declaration of 'verbose' was here

Index: mplayer/cfg-common.h
===================================================================
--- mplayer/cfg-common.h	(revision 24384)
+++ mplayer/cfg-common.h	(working copy)
@@ -337,8 +337,6 @@
 
 #include "config.h"
 
-extern int quiet;
-extern int verbose;
 extern char *mp_msg_charset;
 
 // codec/filter opts: (defined at libmpcodecs/vd.c)