Avoid binary stripping rule code duplication.

Originally committed as revision 5500 to svn://svn.ffmpeg.org/ffmpeg/trunk

Makefile

@@ -80,17 +80,13 @@ endif
 ffmpeg_g$(EXESUF): ffmpeg.o cmdutils.o .libs
 	$(CC) $(FFLIBDIRS) $(LDFLAGS) -o $@ ffmpeg.o cmdutils.o $(FFLIBS) $(EXTRALIBS)
 
-ffmpeg$(EXESUF): ffmpeg_g$(EXESUF)
-	cp -p $< $@
-	$(STRIP) $@
-
 ffserver$(EXESUF): ffserver.o .libs
 	$(CC) $(FFLIBDIRS) $(LDFLAGS) $(FFSLDFLAGS) -o $@ ffserver.o $(FFLIBS) $(EXTRALIBS)
 
 ffplay_g$(EXESUF): ffplay.o cmdutils.o .libs
 	$(CC) $(FFLIBDIRS) $(LDFLAGS) -o $@ ffplay.o cmdutils.o $(FFLIBS) $(EXTRALIBS) $(SDL_LIBS)
 
-ffplay$(EXESUF): ffplay_g$(EXESUF)
+%$(EXESUF): %_g$(EXESUF)
 	cp -p $< $@
 	$(STRIP) $@