Tag to be used with the master branch of atlas/athena. Update(s) since 2.0.38: - Updates to CheckerGccPlugins; - Reverted the symbol hiding of component libraries that was introduced in 2.0.38; - Introduced a different mechanism for preventing linking against component libraries, one putting statements into the compilation/link commands that would make those fail; - Hid the "Package build suceeded" messages when per-package log file writing is disabled.