Fixing ttmkfdir, with help of a modification in deb-package.

svn path=/nixpkgs/trunk/; revision=15335

pkgs/tools/misc/ttmkfdir/cstring.patch

@@ -0,0 +1,12 @@
+diff --git a/directory.cpp b/directory.cpp
+index 5f0d78a..b94cbe5 100644
+--- a/directory.cpp
++++ b/directory.cpp
+@@ -2,6 +2,7 @@
+ #include <dirent.h>
+ #include <sys/stat.h>
+ #include <unistd.h>
++#include <cstring>
+ 
+ #include "directory.h"
+