[SCM] CLHEP: A Class Library for High Energy Physics annotated tag, upstream/2.1.2.3, created. upstream/2.1.2.3

[Lifeng Sun]

The annotated tag, upstream/2.1.2.3 has been created
        at  112f3c1f743b056b55494adfb4be2513953b3efe (tag)
   tagging  ea6882eb00070da93d03bca9f5421349f2c343da (commit)
  replaces  upstream/2.1.2.2
 tagged by  Lifeng Sun
        on  Mon Jun 4 02:44:47 2012 +0800

- Shortlog ------------------------------------------------------------
Upstream version 2.1.2.3

Lifeng Sun (1):
      Imported Upstream version 2.1.2.3

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CLHEP: A Class Library for High Energy Physics