Integrated build script (static/shared/buid-dir/osx).
Patch boost m4 discovery for homebrew.
Fix improper definition of SET_BOOST_TEST_DYN_LINK.
Fix missing libs in test build.
Remove -lboost_unit_test_framework from libbitcoin package config libs.
Merge pull request #112 from evoskuil/version2

Integrated build script (static/shared/build-dir/prefix/osx).
Disable visiblity restrictions (temp).
Add hmac_sha256, based on existing/libsodium implementations.
Fix c++ hmac_sha256 wrapper return size.
Merge pull request #113 from evoskuil/version2

Add hmac_sha256, based on existing/libsodium implementations.
Revert boost m4 change, clean builds in all supported configurations/platforms.
Merge pull request #114 from evoskuil/version2

Revert boost m4 change, clean builds in all configs/platforms.