crazy fun back to 1.7 for now (so it works in ci), partial revert of 0a6119f

Author: lukeis

rake-tasks/crazy_fun/mappings/java.rb

@@ -318,8 +318,8 @@ def handle(fun, dir, args)
             :optimize             => true,
             :debug                => true,
             :nowarn               => true,
-            :source               => '1.8',
-            :target               => '1.8'
+            :source               => '1.7',
+            :target               => '1.7'
           ) { |ant|
             ant.classpath(:refid => "#{args[:name]}.path")