[Soot-list] Load jar into soot

[Eric Bodden]

> Multiple "-process-dir" options are possible because soot.Options can
> parse them multiple times and stores them inside a list.

Oh wow, thanks for pointing this out. I always used to unzip JAR files
because I always thought that had not been implemented. The option
should really be called "process-path" then. Maybe we should have an
alias for it.

Eric