Ability to add "jvm arguments" based on "@Param"

[Vladimir Sitnikov]

Having thought a bit, I am inclined to
OptionsBuilder.searchSpaceExplorer(Function<OptionsBuilder,
List<OptionsBuilder>> explorer)

In other words, explorer would be able to return multiple sub-options
(empty list meaning "stop here", and a list of length 3 meaning "try
those 3 combinations").

It is not clear yet how that should interact with current parameter
space examination though.

Vladimir