A way to pass VM options

[quintesse]

A bit like --javac for the compiler, we need a way to pass options to VM that's handling the execution. For example, we don't have any way right now to pass things like -Xmx.

The problem will be in deciding how to do this. Right now I don't see any other way but handling this in the shell/batch scripts, which sucks.

[FroMage]

Moving to 1.2, unfortunately.

I need this badly, right now I can't do certain stuff because of OOM

[quintesse]

@CMcDee use the environment variable JAVA_OPTS for this for now