Make only one CompilerServices instance per World
Make only one CompilerServices instance per World

We have to clean it up at the end of compilation; failing to do so can
break precompilation.

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