Bugfix: Accuracy estimation had been corrupted since commit 7ef3cf9bbf295d8aeff94d53a4ad0e719ac9e9f3

Signed-off-by: Andreas W. Kempa-Liehr <obi@uni-muenster.de>
Enhanced method .almostEqual of class TestFMFversion1_0 with error message.

Signed-off-by: Andreas W. Kempa-Liehr <obi@uni-muenster.de>
Enhanced estimation of floating point accuracy.

Signed-off-by: Andreas W. Kempa-Liehr <obi@uni-muenster.de>