Commits

Michael Gottesman committed a3aa89d4c46
Remove Callback from SILBuilder and instead rename emit{StrongRelease,ReleaseValue} => emit{StrongRelease,ReleaseValue}AndFold. Then introduce a new method emit{StrongRelease,ReleaseValue} that returns a PointerUnion containing the increment to be deleted if it exists. This obviates the need for the callback. Swift SVN r27804