renaming: ndn-cpp to ndn-cpp-dev

Change-Id: Iff3e4ff53a0005b7dd35c57d03da76b347170d03
c/util: Correcting qualifiers for memory operations

Change-Id: I6cd5d18765f50e1411ea5c5cd269d7f43816bbdc
renaming: Make names of the tools unique

Change-Id: I4bcc1844e8160f076fd886a6be56ab8d1fb15802
src: Adding pkgconfig script, so apps can use pkg-config to get all necesasry parameters to compile against the library

Change-Id: Ie19fc258c2602a3f0685c247e328e9d3166639dc
face+node: Improving async operations

Now expressInterest is executed strictly in io_service thread, which
should guarantee absence of resource contention, provided that
io_service has exactly one thread.

Change-Id: I4b146ee34b98bfa6564935d5f2fe33056a402694