[auto] Merge from Core
[auto] Merge from Core

    • #0ac9ae2 — Prevent an error when static::$_class is empty. (Ivan Enderlin, 2013-01-03)

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Merge remote branch 'library-core/master'

Grummfy/Central,vcgato29/Central,Metalaka/Central,Metalaka/Central,Grummfy/Central,vcgato29/Central