Smoke Bugfix /enhancement: Load pre 2.65 pointcaches.

Warning: Just make sure that you DON'T free the cache at any point. This patch can only display existing pointcaches from e.g. 2.64

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@55390 954f8c5b-7b00-dc11-b283-0030488c597c