ObjectiveC. When issuing property implementation is
not using backing ivar warning, ignore when
property is not being synthesized (user declared its
implementation @dynamic). // rdar://1583425


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199820 91177308-0d34-0410-b5e6-96231b3b80d8
Driver: Suppression support for -Wa,--compress-debug-sections

(to go with existing suppression of -Wa,-compress-debug-sections)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199822 91177308-0d34-0410-b5e6-96231b3b80d8