Add code for terminating internal links on hitting line endings
Add code for terminating internal links on hitting line endings

Another step towards getting internal links working; still a few more
to go.

Signed-off-by: Wincent Colaiuta <c76ac2e9cd86441713c7dfae92c451f3e6d17fdc@wincent.com>

geni/wikitext,geni/wikitext,barnaclebarnes/wikitext,barnaclebarnes/wikitext,wincent/wikitext,barnaclebarnes/wikitext,geni/wikitext,wincent/wikitext