Fixed problem with other enumerate environments inside the question.

Remaining bug: just one line of each alternative is grabbed. :(
test_span.pl: Added a comment in the code where we need to set the correct match to grab the whole alternative, not just its first line as it does now.
Fized some typos on LaTeX input file.
Re-design of LaTeX sample file to the standard test format.
test_span.pl: Grab just the first line of each alternative bug fixed
	      (any one reading this could make it more "perlish" than it
	      is.)

	      Changed bottom question delimiter to "\clearpage" to match
	      the test standard format.