Use nailgun for faster startup

[oc]

Currently uses ...ant.taskdefs.Java to lauch jruby-jvm. Should be refactored into something more flexible in order to i.e. run with nailgun, etc.

Suggestions for better lightweight class/jvm launchers?

[torbjornvatn]

Have org.codehaus.mojo:exec-maven-plugin been tested?

[aslakhellesoy]

Not sure if nailgun is a good option. The classpath must be set on the nailgun server (jruby --ng-server -J-cp....) and when you build with maven you're typically compiling stepdefs and code. This means the nailgun server must be restarted and you're back to square one wrt speed saving. Or am I missing something?

[oc]

Sorry I haven't responded sooner. The reason I figured it too much of a hassle and discontinued my nailgun branch was because of classpath issues as Aslak correctly point out. Might consider JavaRebel-plugin instead, but I'll wait till IDEAs cucumber-support is more stable.

[aslakhellesoy]

This should be implemented decoupled from Maven so it can be used from Ant, CLI etc.