Lambda support

[VaneskaSousa]

It is essential to use lambda so that I can run embedded applications while consuming as little memory as possible. In addition to avoiding bugs caused by the way TotalCross handles retrolambda / lambda

[jeffque]

What bugs in retrolambda?

I use it extensively, and I shall say that the only issues I had with it are:

1. junit tests
2. when on a Maven Reactor, the lambda classes deploys to a random JAR file that may or may not be picked up by tc-compiler-help (Running retrolambda mojo in a pom reactor yields lambda classes in wrong target luontola/retrolambda#156, but I need to get the minimum example up and running and open a new issue about that)

Besides that, no problems.

Also, it would be useful if you let @luontola aware of your issues, preferable opening issues at luontola/retrolambda repo

[ItaloYeltsin]

For now I think we should wait the users to open a issue related to this. In the past we had some problems with retrolambda because of the way it was being called in the totalcross-maven-plugin. Currently, users have not complaning about any issues related to retrolambda!