Unconditional pick up of string.h

Index: lib/copytexttoc.c
--- lib/copytexttoc.c.orig
+++ lib/copytexttoc.c
@@ -29,7 +29,7 @@
 #if STDC_HEADERS || HAVE_STRING_H
 #include <string.h>
 #else
-#include <strings.h>
+#include <string.h>
 #endif
 
 char *__rcopytexttoc (__txtvp t)
