Compile orq as liborq
Further cleanups to Makefile

- add recipes for `all`, `default` and `clang`
    - clang is just a shortcut for CXX=clang++
Temporarily disable coveralls
Re-add support for coveralls
Merge branch 'develop' into feature/liborq

* develop:
  Changed Z to uint16_t outside of OTI, fixes #7
Attempt to make this compile with c++11.