removed MatStructure argument in KSPSetOperators and Jacobian user routine
removed MatStructure argument in KSPSetOperators and Jacobian user routine

walshjon/openmc,bhermanmit/openmc,kellyrowland/openmc,lilulu/openmc,walshjon/openmc,walshjon/openmc,smharper/openmc,johnnyliu27/openmc,wbinventor/openmc,mit-crpg/openmc,wbinventor/openmc,sxds/opemmc,amandalund/openmc,paulromano/openmc,wbinventor/openmc,lilulu/openmc,samuelshaner/openmc,mit-crpg/openmc,shikhar413/openmc,paulromano/openmc,shikhar413/openmc,mjlong/openmc,mit-crpg/openmc,paulromano/openmc,sxds/opemmc,mit-crpg/openmc,johnnyliu27/openmc,smharper/openmc,shikhar413/openmc,liangjg/openmc,wbinventor/openmc,amandalund/openmc,samuelshaner/openmc,samuelshaner/openmc,kellyrowland/openmc,smharper/openmc,liangjg/openmc,liangjg/openmc,johnnyliu27/openmc,lilulu/openmc,smharper/openmc,bhermanmit/openmc,walshjon/openmc,samuelshaner/openmc,amandalund/openmc,mjlong/openmc,shikhar413/openmc,amandalund/openmc,paulromano/openmc,liangjg/openmc,johnnyliu27/openmc