make: In configure.ac, define HAVE_ATTRIBUTE_DEPRECATED and use it in common.h to define DEPRECATED_IN_NDN_CPP.
encoding: Fix warning in tlv-key-locator: Need to include tlv.name.h.
global: Mark deprecated functions with DEPRECATED_IN_NDN_CPP.
tests: In test-encode-decode-data dumpData, don't show deprecated fields.
security (minor): In key-chain, use Name size() instead of deprecated getComponentCount().
security: In verifySignature, don't check the signature's digestAlgorithm (in preparation to using TLV style handling of different signature algorithms).