====== Renaming library to ndn-cxx ======

Dependent applications should perform the following changes:

* all includes should be changed from <ndn-cpp-dev/...> to <ndn-cxx/...>
* documentation files/comments referring to ndn-cpp-dev should be
  updated and refer to ndn-cxx
* if the app uses pkgconfig for dependency detection, 'libndn-cpp-dev'
  should be replaced with 'libndn-cxx'.  Example for waf users:

    conf.check_cfg(package = 'libndn-cxx', args = ['--cflags', '--libs'],
                   uselib_store = 'NDN_CXX', mandatory = True)

Change-Id: I92d9ec7ff176b9fe8b4352bf04bbb32aa810422d
Refs: #1491