Modified the Stage 2 jet algorithm to have the 9x9 square overlap filter seed jet algorithm with a switch to carry out donut subtraction
Merge branch 'l1t-devel-CMSSW_7_1_0_pre6' of github.com:cms-l1t-offline/cmssw into mydevel-branch-pre6
Added Donut subtraction as a possible PUS method, with the string Donut in the jetPUSType parameter