added a scary jikes warning

diff --git a/build.xml b/build.xml
index b1e2fa9..e1aae85 100755 (executable)
--- a/build.xml
+++ b/build.xml
@@ -59,7 +59,7 @@
   <property name="app.name"       value="Mir"/>
   <property name="deploy.home"    value="../${app.name}"/>
 
-  <!-- If you want to use the very good jikes compiler, uncomment this -->
+  <!-- don't use unless your Jikes is >= v1.17 and you know what you are doing -->
   <!-- <property name="build.compiler"   value="jikes"/>-->