[jvm] Make libdir known in 'sub hll-config'
[jvm] Make libdir known in 'sub hll-config'

This lets EvalServer find Perl6::BOOTSTRAP and makes 'make test'
work again. (At least after 'make install'.)

jonathanstowe/rakudo,softmoth/rakudo,salortiz/rakudo,salortiz/rakudo,labster/rakudo,rakudo/rakudo,rakudo/rakudo,Gnouc/rakudo,salortiz/rakudo,nbrown/rakudo,softmoth/rakudo,tbrowder/rakudo,tbrowder/rakudo,usev6/rakudo,Gnouc/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,sjn/rakudo,tony-o/rakudo,jonathanstowe/rakudo,awwaiid/rakudo,raydiak/rakudo,sjn/rakudo,labster/rakudo,Gnouc/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,sjn/rakudo,tony-o/rakudo,nbrown/rakudo,MasterDuke17/rakudo,salortiz/rakudo,awwaiid/rakudo,sjn/rakudo,rakudo/rakudo,salortiz/rakudo,labster/rakudo,nbrown/rakudo,sjn/rakudo,nbrown/rakudo,rakudo/rakudo,nbrown/rakudo,lucasbuchala/rakudo,usev6/rakudo,tony-o/rakudo,nbrown/rakudo,awwaiid/rakudo,raydiak/rakudo,usev6/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,awwaiid/rakudo,lucasbuchala/rakudo,salortiz/rakudo,usev6/rakudo,labster/rakudo,MasterDuke17/rakudo,usev6/rakudo,tbrowder/rakudo,lucasbuchala/rakudo,rakudo/rakudo,tony-o/rakudo,labster/rakudo,Gnouc/rakudo,lucasbuchala/rakudo,lucasbuchala/rakudo,awwaiid/rakudo,softmoth/rakudo,softmoth/rakudo,jonathanstowe/rakudo,labster/rakudo,MasterDuke17/rakudo,rakudo/rakudo,raydiak/rakudo,Gnouc/rakudo,tbrowder/rakudo,jonathanstowe/rakudo,tony-o/rakudo,jonathanstowe/rakudo,tony-o/rakudo,raydiak/rakudo,softmoth/rakudo