Changed cached variable name to prevent clash and applied DAKOTA CMake-style convention:  ENABLE_TESTS is now DAKOTA_ENABLE_UNIT_TESTS
Changed cached variable name to prevent clash and applied DAKOTA
CMake-style convention:  ENABLE_TESTS is now DAKOTA_ENABLE_UNIT_TESTS



git-svn-id: dcef21d3ff4cbd8dced82702dcaad637bf246ecc@957 aa0779c3-6ec2-4b84-a212-a405c134cd8d

pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA