Revert "Swift Calling Convention: Parameters are allowed after the"
Revert "Pass the end of a component to SwiftAggLowering's enumerateComponents callback"

This reverts commit 82233f88345d9b88088ae28f846f678c516ee124.
and commit 21ae3374449b3d08a8d53db2a1b34fcfb8121896.

I mistakenly pushed to the swift-3.0-branch instead of the swift-3.1-branch.
5 files changed