Make "for ^10 .reverse" just as fast as "for ^10"
Make "for ^10 .reverse" just as fast as "for ^10"

Literal ranges in for loops are heavily optimized.  However, looping
over a reverted Range was only optimized at the Range.reverse method
level.  This commit statically optimizes "for ^10 .reverse" in the
same way as "for ^10".  This makes it about 6x faster.

nbrown/rakudo,nbrown/rakudo,tbrowder/rakudo,salortiz/rakudo,MasterDuke17/rakudo,softmoth/rakudo,tbrowder/rakudo,labster/rakudo,rakudo/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,Gnouc/rakudo,tbrowder/rakudo,softmoth/rakudo,softmoth/rakudo,nbrown/rakudo,rakudo/rakudo,labster/rakudo,tony-o/rakudo,tony-o/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,softmoth/rakudo,tony-o/rakudo,rakudo/rakudo,labster/rakudo,MasterDuke17/rakudo,nbrown/rakudo,nbrown/rakudo,nbrown/rakudo,salortiz/rakudo,salortiz/rakudo,salortiz/rakudo,tbrowder/rakudo,tbrowder/rakudo,Gnouc/rakudo,salortiz/rakudo,softmoth/rakudo,tony-o/rakudo,salortiz/rakudo,Gnouc/rakudo,rakudo/rakudo,labster/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,labster/rakudo,tbrowder/rakudo,tony-o/rakudo,labster/rakudo,rakudo/rakudo,MasterDuke17/rakudo,tony-o/rakudo,rakudo/rakudo