Added mkdir to chalmers path setup.

doc/darcs.html

@@ -160,6 +160,7 @@ system to make it possible for you to push changes to the main
 repository. To fix this, log in to your Chalmers account and run:
 </P>
 <PRE>
+  mkdir -p $HOME/.vcs4
   echo unsup &gt;&gt; $HOME/.vcs4/pathsetup
 </PRE>
 <P></P>

doc/darcs.txt

@@ -113,6 +113,7 @@ system to make it possible for you to push changes to the main
 repository. To fix this, log in to your Chalmers account and run:
 
 ```
+mkdir -p $HOME/.vcs4
 echo unsup >> $HOME/.vcs4/pathsetup
 ```