More session work.

tests/testpost.jet

@@ -1,13 +1,6 @@
 #!../jet-2.0
 <upload name="imagefiledata" path="images/%name" />
-<jet cgi="true">
-$[:name]
-$[:name:1]
-$[:name:2]
-$[:name:3]
-$[:name2]
-$[:name:2;tohex]
-$[:name:3;tohex]
-$[:name2;tohex]
-<dump file="/tmp/dump.txt" />
+<jet sessiondir=".">
+
+<dump file="./dump.txt" />
 </jet>