Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Updated the build of Davix to happen on any linux system that should be able to build it. (Changed from only building it on SLC6 and CC7.)
  - Updated the Geant4 version to 10.1.patch03.atlas07.
  - Updated the lwtnn version to 2.8.
  - Suppressed some warnings from new CMake versions.

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since 2.0.14:
  - Update gcc checker plugins to avoid some false positives from the
    thread-safety checker and aldo to copy documentation here.
  - Fix ACTS version used in the build.
  - Update lwtnn to 2.8.
  - Minor cmake fixes

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since 2.0.13:
  - Added FindFreetype to AtlasLCG/modules, to properly get the Freetype library shipped with LCG, instead of the system one.
    This fixes a runtime error in VP1 (https://its.cern.ch/jira/browse/ATLASVPONE-427)

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Fixed up the CMake version requirements in the code a bit;
  - Added a find-module for the C++ Guidelines Support Library;
  - Fixed the environment setup for matplotlib from LCG_94;
  - Upgraded KLFitter to version 1.2.1;
  - Added fixes for building ROOT 6.14/04 on bare-bones Ubuntu systems.

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since 2.0.12:
  - Switched to build projects in c++17 mode by default, except with GCC <7;
  - Added the dependencies of matplotlib to make it usable out of pyanalysis in LCG_94.

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Upgraded to HDF5 version 1.10.3;
  - Added a the CMake version used for the build to the project's ReleaseData file;
  - Upgraded to the (currently) latest version of yampl;
  - Fixed an issue with the build timestamps saved into the ReleaseData file.

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since 2.0.11:
  - Revived the "doc" target for Doxygen documentation generation;
  - Updated all "standalone" externals to versions in sync with LCG_94;
  - Upgraded to the (currently) latest version of yampl;
  - Added the build's CMake version to the generated ReleaseData file;
  - Upgraded to HDF5-1.10.3;
  - Patched CLHEP to remove build warnings with GCC 8;
  - Added FindLibXslt.cmake, and made Findtdaq.cmake use it;
  - Added a fix for the build time inconsistency that we had in ReleaseData.

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Updated BAT and KLFitter to re-build when switching from 1.0.38 to this tag. (To account for the ROOT version change.)

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Updated AtlasLCG to be compatible with LCG_94;
  - Upgraded all packages used by AnalysisBaseExternals to have the same version as they do in LCG_94;
  - Upgraded AthAnalysisExternals to build against LCG_94 by default;
  - Fixed a small issue in HDF5's build, where it wouldn't use ZLIB correctly from the LCG release;
  - Backported some technical updates from the master branch;
  - Added the ability to build Doxygen documentation using CMake once again.

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since 2.0.10:
  - Upgraded KLFitter to version 1.2.0;
  - Upgraded HDF5 to version 1.10.2, and switched to building it with CMake;
  - Upgraded lwtnn to version 2.7.1;
  - Upgraded all projects to use LCG_94, with the exception of AnalysisBaseExternals (for now).

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Added extra find-modules to make ART's dependencies work from >=LCG_91 versions;
  - Updated HDF5 to 1.10.2, and switched to building it with CMake;
  - Updated KLFitter to v1.2.0;
  - Updated lwtnn to v2.7.1.

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since 2.0.9:
  - Updates to AtlasLCG to handle the externals needed by ART correctly in LCG_93+;
  - Taught CheckerGccPlugins about the naming convention introduced in Gaudi's PluginSvc v2.

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since the last tag: 
  - Updates to the thread-safety static checker.

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since the last tag: 
  - Switch to LCG93c

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since the last tag: 
  - Read Coin_sources.zip from http://cern.ch/atlas-software-dist-eos/externals/ 
  - Cherry-picks from 1.X related to PlatformHandling

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Added AthGenerationExternals as a new project;
  - Made the standalone ROOT build use the standalone NumPy build;
  - Fixed the handling of the ATLAS_PLATFORM variable.

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since the last tag:
   - Change Acts lib install dir, enable MaterialPlugin, move ACTS to Acts
   - CheckerGccPlugins: Various updates.

Tag to be used ONLY WITH NIGHTLY BUILDS of the master branch of atlas/athena.
Updates since the last tag:
  - Now picking up GDB 8.1 from the ATLAS EOS webpage;
  - Patching the source of BAT to produce correct ROOT dictionaries in an out-of-source build;
  - Added KLFitter to AnalysisBaseExternals and AthAnalysisExternals;
  - Disabled building (most of) the static libraries of Boost for AnalysisBaseExternals;
  - Switched to building ACTS from the head of the master branch of the ACTS git repository. This setting must never be used in a tagged release of atlas/athena!
  - Updated Findxz.cmake to only set up an RPM dependency on SLC6, as LCG doesn't provide this package on CentOS7.

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Turned off the build of (most of) the static Boost libraries, keeping only the dynamic ones;
  - Fixed the dictionary error in the BAT build that showed up when that build was switched to be performed out-of-source;
  - Added KLFitter to the build of AnalysisBaseExternals and AthAnalysisExternals.

Tag to be used with the master branch of atlas/athena.
Updates since the last tag:
  - Fixed the dependency setup for generating .pyc files, which could produce a broken build setup in some cases previously;
  - Tweaked the logic of lcg_generate_env(...) not to print false warnings in some cases;
  - Updates to the GCC checker code from Scott;
  - Added a standalone version of Davix and updated the version of XRootD, updating the build of ROOT to use these new externals. Updated AthAnalysisExternals to build Davix and XRootD.
  - Updated GDB to version 8.1;
  - Removed DMTCP from the repository;
  - Updated all LCG based projects to LCG_93a.