stdlib tests print output on make test

[KristofferC]

E.g.

broadcast (2)             |   41.83  |  0.94  |  2.2 | 355.47     | 625.36  
file (5)                  |   83.03  |  2.12  |  2.5 | 46.13      | 474.23  
lineedit (4)              |    9.81  |  0.17  |  1.7 | 62.74      | 542.38  
	From worker 6:	Test Summary: | Pass  Total
	From worker 6:	readdlm       |   48     48
replcompletions (2)       |    8.17  |  0.16  |  1.9 | 67.07      | 625.36  
	From worker 6:	Test Summary: | Pass  Total
	From worker 6:	comments      |    6      6
	From worker 6:	Test Summary: | Pass  Total
	From worker 6:	skipstart     |    6      6
	From worker 6:	Test Summary: | Pass  Total
	From worker 6:	i18n          |    3      3
	From worker 6:	Test Summary: | Pass  Total
	From worker 6:	issue #13028  |    4      4
	From worker 6:	Test Summary:        | Pass  Total
	From worker 6:	show with MIME types |    5      5
	From worker 6:	INFO: DelimitedFiles tests passed
	From worker 6:	INFO: Testing Mmap