Fix bug 911: m_extractedDataAreDirty was not initialized in UmfPackLU (grafted from c303363d178956db60ea7a21c88b36b20f5d6560)
Fix bug 911: m_extractedDataAreDirty was not initialized in UmfPackLU
(grafted from c303363d178956db60ea7a21c88b36b20f5d6560)

--HG--
branch : 3.2

robustrobotics/eigen,robustrobotics/eigen,robustrobotics/eigen,robustrobotics/eigen