Adapt to format changes in floating point value printing.

interpreter/cling/test/Interfaces/evaluate.C

interpreter/cling/test/Prompt/DontWrap.C

interpreter/cling/test/Prompt/OutputRedirect.C

interpreter/cling/test/Prompt/ValuePrinter/Assignments.C

interpreter/cling/test/Prompt/ValuePrinter/Regression.C

interpreter/cling/test/Prompt/ValuePrinter/TuplesAndPairs.C