ruby: fix build on < 10.6
youtube-dl 2014.02.06

Closes #26456.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
calc: add test

Closes #26445.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
ascii: add test

Closes #26443.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
html2text: add test

Closes #26439.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
yuicompressor: add test

Closes #26438.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>