[Halld-offline] New version set (4.45.0) with new versions of Diracxx (2.0.0) and HDGeant4 (2.28.0)

[Mark Ito]

Folks,

We have a new version set, 4.45.0 
<https://halldweb.jlab.org/halld_versions/version_4.45.0.xml>, that 
incorporates the following two new releases:

  * Diracxx 2.0.0
    <https://github.com/JeffersonLab/Diracxx/releases/tag/2.0.0>
  * HDGeant4 2.28.0
    <https://github.com/JeffersonLab/HDGeant4/releases/tag/2.28.0>

The main change here is the build method for Diracxx. It now uses cmake. 
Recall the email message from Richard Jones on this. Functionality 
should not change (much?).

There is a technical difference in this version set: it uses a new build 
of ROOT 6.08.06, the version of ROOT we have been using for years. The 
build procedure for ROOT has changed because of developments unrelated 
to the packages listed above (build of the ROOT-supplied tbb library is 
requested). Also the package list in the latest version of our CentOS7 
singularity container has changed (the tbb library has been dropped). It 
turns out that now is good time go to a re-built ROOT on all platforms. 
It is the same version of ROOT as before so functionality should not change.

At JLab this version set has been built on RHEL7, RHEL8, Centos7, and 
CentOS7-cntr. It will become the default at JLab at midnight tonight.

   -- Mark


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