Added a build of libcurl.4.dylib which uses Secure Transport instead of OpenSSL.
Also removed libares from the link since it does not seem to be used, but could be used in the future so i left it in the project.
Also fixed the paths of where libcurl.4.dylib is looked for during runtime.
Added libcurl and libcares to the project.
Copy over libcurl.4.dylib for tests.
Added a scheme for building a Release build of CURLHandle for Mac.
Removed the old libcurl which was dependent on libssh2.dylib which is dependent on OpenSSH.