Orvid/druntime — pull request #5 by rainers (2014-12-07 10:23:03+00:00)
Title: fix calling destructors on qualified structs

+ optimize by not calling TypeInfo.next again and again
+ remove type info argument from GC.setAttr/setBits (I thought that was already in the previous PR)

The optimizations make the druntime/benchmark a little faster than the version from master.