Merge pull request #122 from pmienk/develop

Make tests a configuration parameter
Update OSX and other installation instructions.
Update README.md
Update README.md
fix for issue #119 [-Wmaybe-uninitialized]
Reduce boost min version dependency to 1.49.
Remove use of boost::program_options::canonical_display_name().
Build patched version of secp256k1.
Restore chrono and program_options to boost build.
Encapsulate tests to be executed on 'make check' in run-tests.sh.