[AST] In ObjCInterfaceDecl::isDesignatedInitializer(), use getMethod() instead of lookupMethod().

lookupMethod also goes through categories, which we don't need there.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196942 91177308-0d34-0410-b5e6-96231b3b80d8
[objcmt] Add a modernization option to infer and suggest designated initializers.

rdar://15509284

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196943 91177308-0d34-0410-b5e6-96231b3b80d8
[Driver] Rename '-objcmt-white-list-dir-path' option to '-objcmt-whitelist-dir-path' and add an alias for now.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196944 91177308-0d34-0410-b5e6-96231b3b80d8