Output tweaks:

Output tweaks:
- Always print a blank line after significant messages (eg. errors).  This
  makes the handling of blank lines much simpler.

- Don't print full stops at the end of messages.  We mostly don't do it, so
  I got rid of all the remaining ones I could find for consistency.

- Use --leak-check=full rather than --leak-check=yes, for consistency with
  docs and other messages.

- Update partiallydefinedeq.stderr.exp2 for older changes.

This commit only updates the code.  Test updates will follow shortly.  (I'm
separating them so the code changes aren't swamped by the test changes in
the SVN logs.)

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@10783