Document that code inlined into a nodebug function also won't get any debug info.
Document that code inlined into a nodebug function also won't get any
debug info.

Suggested by Paul Robinson in feedback on r296488, thanks!

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@296776 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 1b7c387ad6023424f7bd1e2783ebb4846e9b94ab)

apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang