Make -fno-inline attach NoInline attribute to all functions that are not
marked as AlwaysInline or ForceInline.

This moves us to what gcc does with -fno-inline. The attribute approach
was discussed to be better than switching to InlineAlways inliner in presence
of LTO.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199324 91177308-0d34-0410-b5e6-96231b3b80d8