Externals Update, master branch (2020.03.06.)

Updated all projects to atlasexternals-2.0.59.

The full list of changes (atlasexternals@2.0.58...2.0.59) is:

• Added onnxruntime-1.1.1 to AthenaExternals (ping @dbakshig, @afarbin, @dguest);
• Updates to CheckerGccPlugins for allowing thread-unsafe functions in certain situations without warnings (thanks to @ssnyder);
• Updated AtlasCMake/scripts/cmakeNightlyInstall.sh to know about the latest LCG repositories;
• Suppressed a warning from Clang when generating dictionaries using Ninja as the build system;
• Updated AthAnalysisExternals to use LCG_96b;
• Updated all externals built by AnalysisBaseExternals to be in sync with the versions available in LCG_96b;
  • This included updating FastJet to version 3.3.2, which is used by most projects;
• Reimplemented atlas_add_alias(...) to eliminate a dependency problem that it had (this was discussed in ATLINFR-2524);
• Removed the build of FastJetContrib from all LCG based projects, and made all of them build a patched version of FastJet (for fixing the issue encountered in !30643 (merged)).