Indicate success for simple options when clang called with -cc1.

Patch by David Wiberg.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@187888 91177308-0d34-0410-b5e6-96231b3b80d8
Eliminate CXXConstructorDecl::IsImplicitlyDefined.

This field is just IsDefaulted && !IsDeleted; in all places it's used,
a simple check for isDefaulted() is superior anyway, and we were forgetting
to set it in a few cases.

Also eliminate CXXDestructorDecl::IsImplicitlyDefined, for the same reasons.

No intended functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@187891 91177308-0d34-0410-b5e6-96231b3b80d8
clang-format: Fix corner case in OpenMP pragma formatting.

Before:
  #pragma omp reduction( | : var)
After:
  #pragma omp reduction(| : var)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@187892 91177308-0d34-0410-b5e6-96231b3b80d8
Patch to fix doxygen trailing comments for ObjectiveC methods.
// rdar://14258334


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@187893 91177308-0d34-0410-b5e6-96231b3b80d8