make setValue and getValue private (#3485)
Rm set/getValue, fix *= bug, whitespace (#3485)
Fix combined test input files (#3485)
Pass vectors via reference, whitespace stuff (#3485)
Whitespace after reference & (#3485)
Merge pull request #3490 from dschwen/rttsetget_3485

Change or deprecate  setValue and getValue in RankTwoTensor
Merge commit 'f288704a0f236acffa35e8e6faae97d0956815f4'