Log Message:
Update tokyocabinet to 1.3.16.

Changes:
2008-10-30  Mikio Hirabayashi

	* tcutil.c (tcmapdup): performance was improved.

	* tcutil.c (tctreenew, tctreedel, tctreeput, tctreeout, tctreeget): new functions.

	* tcutil.c (tcsystem): new function.

	* tchdb.c (tchdbopenimpl): memory usage of reader declined.

	* tcadb.c (tcadbsync, tcadbcopy): on-memory database is now supported.

	- Release: 1.3.16