Improve the CHECK lines in debug-options.c by separating out the check for debug info kind and dwarf version.
Improve the CHECK lines in debug-options.c by separating out the check
for debug info kind and dwarf version.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@284420 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 8860ef6ff3518d4717e4e87b31d839c38c9814ed)

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