clang bindings: update to 34bf531fe5

This updates cindex.py to clang commit 34bf531fe55a681b8ed84e1925e10bab79b1be44.

The change includes the commits:

    367e8 [libclang] Introduce clang_Type_getClassType which returns
          the class type of a member pointer type.

    4c4f6 [libclang] Expose the rest of the array types.

These define TypeKind entries 114 through 117, making the
changes from commit 93e267d9524d78e53811f354071a594246431205
no longer necessary.