[12gevmoller_sim] [EXTERNAL] [JeffersonLab/remoll] 29596e: Example external generator macro

[rahmans1]

  Branch: refs/heads/feature-target-shield-design-update-external-gen
  Home:   https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_remoll&d=DwICaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=-0uahHXTLsQsllHBZNHgOynLaY6DUxqehsUJ91-BlNY&m=huH_nt1zqlPkbv3S_4JPgB97YFluU9qU1ZKC2RhNAfE&s=P-tpldkbzIHlsjrh_vI7lBuABUbnf5A4HYKdmi-xqj4&e= 
  Commit: 29596ee819392cc58b78565aac7b0cce3689b025
      https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_remoll_commit_29596ee819392cc58b78565aac7b0cce3689b025&d=DwICaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=-0uahHXTLsQsllHBZNHgOynLaY6DUxqehsUJ91-BlNY&m=huH_nt1zqlPkbv3S_4JPgB97YFluU9qU1ZKC2RhNAfE&s=i040McqI3PzElH4zqIOrToirkslTLvgnP5rq2533rLI&e= 
  Author: Sakib Rahman <rahmans at myumanitoba.ca>
  Date:   2021-04-24 (Sat, 24 Apr 2021)

  Changed paths:
    A macros/runExternalGen.mac

  Log Message:
  -----------
  Example external generator macro