Seems i forgot this kinda-crutial part of the hack!

Change-Id: I84b5cf2ab2e04da8cd4bcc518814728048935e77
Reviewed-on: http://gerrit.dmdirc.com/277
Reviewed-by: Gregory Holmes <greboid@dmdirc.com>
Tested-by: Gregory Holmes <greboid@dmdirc.com>

nbproject/project.properties

@@ -66,7 +66,7 @@ plugins.test.dir=modules/plugins/test
 # suckiness.
 # Without this parameter, everything will still compile, but netbeans won't
 # know about any files it isn't explicitly told about.
-javac.classpath=${toString:plugins.libs}
+javac.classpath=${private.classpath}:${toString:plugins.libs}
 javac.test.classpath=\
     ${javac.classpath}:\
     ${build.classes.dir}:\