Minor release script fixes.
Minor release script fixes.

Change-Id: Ifd0a7f4f584c85d4d9574eca46094b372a8d7aff

ikoruk/ceres-solver,kartikkumar/ceres-solver,timfel/ceres-bin,stonier/ceres_solver,jmwalls/ceres-solver-fork,DougFirErickson/ceres-solver,ysonggit/ceres-solver,ikoruk/ceres-solver,jmwalls/ceres-solver-fork,kartikkumar/ceres-solver,entylop/ceres-solver,stonier/ceres_solver,DougFirErickson/ceres-solver,ysonggit/ceres-solver,timfel/ceres-bin,DougFirErickson/ceres-solver,stonier/ceres_solver,whuaegeanse/ceres-solver,whuaegeanse/ceres-solver,kartikkumar/ceres-solver,timfel/ceres-bin,entylop/ceres-solver,jmwalls/ceres-solver-fork,entylop/ceres-solver,ysonggit/ceres-solver,ikoruk/ceres-solver,whuaegeanse/ceres-solver,stonier/ceres_solver,entylop/ceres-solver,ikoruk/ceres-solver,ikoruk/ceres-solver,ysonggit/ceres-solver,DougFirErickson/ceres-solver,kartikkumar/ceres-solver,whuaegeanse/ceres-solver,timfel/ceres-bin,jmwalls/ceres-solver-fork