Added Blue Gene/Q compilation option.
Added Blue Gene/Q compilation option.

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