Item12359: Add file handle cleanup for LineIterator

git-svn-id: http://svn.foswiki.org/trunk/core@16417 0b4bb1d4-4e5a-0410-9cc4-b2b747904278
Item12361: Merge records divided by newlines.

git-svn-id: http://svn.foswiki.org/trunk/core@16418 0b4bb1d4-4e5a-0410-9cc4-b2b747904278