Fix mdtool build invocation.

mdtool-build

@@ -0,0 +1,2 @@
+#!/bin/sh
+mdtool build $@

pre-commit.posix

@@ -2,7 +2,7 @@
 
 for dir in `find . -type d -maxdepth 1 | grep -v "\.$" | grep -v "\./\."`; do
     if ! [ -f $dir/Makefile ]; then
-        mono --debug xcsv.exe $dir "mdtool build";
+        mono --debug xcsv.exe $dir mdtool-build;
 
         if [ $? != 0 ]; then
             exit 1;