[Halld-offline] New release of sim-recon: version 2.9.0

[Mark Ito]

Find the release notes at 
https://github.com/JeffersonLab/sim-recon/releases/tag/2.9.0. This 
version is used by version_1.29.xml and is now the default version at JLab.

Find a list of all of the sim-recon releases at 
https://halldweb.jlab.org/wiki/index.php/Sim-Recon_Tagged_Releases and 
at https://github.com/JeffersonLab/sim-recon/releases .