Update CMake to 3.4.0.

Release notes: https://cmake.org/cmake/help/v3.4/release/3.4.html

• Bump PORTREVISION in a few ports that do not ship SOVERSIONed libraries anymore (see https://cmake.org/gitweb?p=cmake.git;a=commit;h=f799ffb5).
• Switch MASTER_SITES to https.

PR: 204629