Made the set tag work to local variables. Moved tests to their own directory.

tests/testscope.jet

@@ -0,0 +1,8 @@
+#!./jet-2.0
+<jet cgi="true" name1="localname" filterblanklines="true" trimlines="true">
+ <set name="testvar" value="do you see this" scope="local" />
+ #[testvar]
+ <for name="ix" start="1" end="5" step="1">
+  -->#[ix]<--
+ </for>
+</jet>