Most notably:
- use relative paths in file list instead of file name only
- enable sorting of brief descriptions of class members
- show one enum value per line
refs #4163
Change-Id: Ib08601bc90f6eeb4e8754ed4335a447d5d0cc26c
Headers in core/ are now included as `#include "core/*.hpp"`.
This allows NFD to rely less on include paths when used as a submodule in
another codebase, such as ndnSIM and NFD-Android.
refs #3127
Change-Id: Ia38f3c97427e17ff7b5401281f1fe875b5d5313e