Log Message:
Update tarsnap to version 1.0.33.

Changes since version 1.0.32:

	- Tarsnap now caches archive metadata blocks in RAM, typically
	  providing a 5x - 10x speedup and reduction in bandwidth usage
	  in the "fsck" operation and when deleting a large number of
	  archives at once.
	- Tarsnap's internal "chunk" metadata structure is now smaller,
	  providing a ~10% reduction in usage on 32-bit machines and a
	  ~30% reduction in memory usage on 64-bit machines.
	- Tarsnap's --newer* options now correctly descend into old
	  directories in order to look for new files. (But note that
	  tarsnap's snapshotting makes these options unnecessary in
	  most situations.)
	- Multiple minor bug fixes and cleanups.

Changes since version 1.0.31:

	- A bug affecting the handling of the --nodump option on Linux
	  (and in most cases rendering it inoperative) is fixed.
	- A workaround has been added for a compiler bug in OS X 10.7 (Lion).
	- The NetBSD "kernfs" and "ptyfs" filesystems are now excluded
	  from archival by default.