Debug Info: code clean up.

Unifying the argument ordering of private construct functions in CompileUnit to
follow constructTypeDIE(DIE &, DIBasicType),
constructTypeDIE(DIE &, DIDerivedType), constructTypeDIE(DIE &, DICompositeType),
constructSubrangeDIE and constructArrayTypeDIE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193284 91177308-0d34-0410-b5e6-96231b3b80d8