* move src/lib/{io,util} to src/lib/acf/{io,util}
* udpate src/app tree for stand-alone builds using the acf hunter package
  + remove some application depependencies on private acf headers
  + relocate most of acf/src/lib/util to acf/src/app/common as support lib for console apps leaving only those files that are needed by the acf lib itself; update c++ and cmake and fix up namespace + include guards
  + relocate acf/cmake dir to acf/src/app/cmake; update c++ and cmake references
* move src/lib/acf/acf/ut tests to src/tests for reuse of acf_common lib and be sure to build acf_common if examples were skipped
* simplify PROJECT root cmakelists.txt to always use drishti-upload config and use inherited HunterGate URL + SHA1 if it is part of a managed build `if(HUNTER_PACKAGE_BUILD)` etc …
* prune some unused opencv cereal serialization definitions in cv_cereal.h
* remove to_string.cpp cmake platform checks (assume c++11) and remove stdlib_string.h namespace patches
* bump to version 0.1.14 for new tag