Fixing issue with CMake >= 2.8.10.2 FindPackageHandleStandardArgs.
Fixing issue with CMake >= 2.8.10.2 FindPackageHandleStandardArgs.

- Prior to CMake 2.8.10.2 FindPackageHandleStandardArgs was safe if
  passed <LIBRARY>_FOUND as a variable to validate, this is no longer
  true for newer CMake releases.
- Also adding missing SUITESPARSEQR_FOUND requirement for
  SUITESPARSE_FOUND.

Change-Id: I0fdde56585fc736bdfbf433901ad17ee9f1cc216

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