Removed iterative malloc from diminuto_path.

git-svn-id: svn://graphite/diminuto/trunk@465 5dfbf39a-1452-0410-8a97-9e58fedde8e3
Bumped version.

git-svn-id: svn://graphite/diminuto/trunk@466 5dfbf39a-1452-0410-8a97-9e58fedde8e3