Objective-C SDK modernizer. When modernizing an enum to 
NS_ENUM/NS_OPTIONS use the underlying type if there is 
no associated type. rdar://19198042


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@223934 91177308-0d34-0410-b5e6-96231b3b80d8
Added a testcase to make sure the parser allows
but ignores module imports in debugger mode,
even inside functions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@223935 91177308-0d34-0410-b5e6-96231b3b80d8