Fix implicit declaration of function warnings.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23677 b3059339-0415-0410-9bf9-f77b7e298cf2

TOOLS/avi-fix.c

@@ -11,7 +11,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-//#include <string.h>
+#include <string.h>
 
 #define FCC(a,b,c,d)  (((a)<<24)|((b)<<16)|((c)<<8)|(d))
 

TOOLS/dump_mp4.c

@@ -1,3 +1,5 @@
+#include <stdio.h>
+
 int main(){
 int c;
 unsigned int head=-1;

TOOLS/subrip.c

@@ -14,6 +14,7 @@
 #include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/wait.h>