just spent waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay too long working on eina_str_s...

just spent waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay too long working on eina_str_split/full. never again.
this function was severely broken since 1.0: it did not abide by the limit param, and it was almost comically slow. I have (hopefully) fixed both of these issues. I also fixed the bug where this function was less than 200 lines long.

I'll backport this once it gets tested/reviewed/reverted

git-svn-id: svn+ssh://svn.enlightenment.org/var/svn/e/trunk/eina@71871 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33