Added filetype to statepoint.py and fixed revision and k_generation.
Added filetype to statepoint.py and fixed revision and k_generation.

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