tests for tts:textDecoration, tts:textAlign and tts:padding

attached are tests for the remaining values in tts:textDecoration and  
tts:textAlign, following the chart at http://www.w3.org/2008/10/dfxp- 
test-coverage.html#features.  i've also included tests for  
tts:padding.  i'll send more later this week.  let me know if you see  
problems.

g.