Fix "ucontext routines are deprecated" error on apple
Fix "ucontext routines are deprecated" error on apple

Change-Id: Ibe164d4efe719bd68cc0c74f8414564463ffadb0
Reviewed-on: https://gerrit.dechocorp.com/10508
Reviewed-by: Punky Brewster (labs admin) <4fefd66e0791c836d3da15985fe778b56ecb4b1b@example.com>
Reviewed-by: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@mozy.com>

cgaebel/mordor,mozy/mordor,mtanski/mordor,mozy/mordor,mtanski/mordor,ccutrer/mordor,ccutrer/mordor,cgaebel/mordor,mtanski/mordor,adfin/mordor,ccutrer/mordor,adfin/mordor,mozy/mordor,adfin/mordor