Update tokyocabinet to 1.4.11.

Changes:
2009-03-11  Mikio Hirabayashi  <mikio@users.sourceforge.net>

* tcutil.c (tctopsort): new function.

* tchdb.c (tchdbfbpinsert, tchdbfbpsearch, tchdbfbpsplice): performance was improved.

* tchdb.c (tchdbwriterec): concurrency was improved.

* tctdb.c (tctdbqrysearchimpl): a bug related to the skip parameter was fixed.

* tctdb.c (tctdbputimpl, tctdbidxout, tctdbqrysearchimpl): performance was improved.

- Release: 1.4.11

2009-03-02  Mikio Hirabayashi  <mikio@users.sourceforge.net>

* tcutil.c (tcmdbputproc, tcndbputfunc): removing mechanism was added.

* tchdb.c (tchdbwalrestore): a bug of memory corruption was fixed.

* tchdb.c (tchdbremoverec): new function.

* tchdb.c (tchdbputproc): removing mechanism was added.

* tcbdb.c (tchdbputproc): removing mechanism was added.

* tcfdb.c (tcfdbputproc): removing mechanism was added.

* tctdb.c (tctdbsetlimit): new function instead of "tctdbqrysetmax".

* tcadb.c (tcadbmisc): "setlimit" parameter was added.

- Release: 1.4.10

2009-02-18  Mikio Hirabayashi  <mikio@users.sourceforge.net>

* tcbdb.c (tcbdbnodesubidx): a bug related to tree reconstruction was fixed.

* tcbdb.c (tcbdboptimizeimpl): memory usage was reduced.

- Release: 1.4.9

2009-02-18  Mikio Hirabayashi  <mikio@users.sourceforge.net>

* tcutil.c (tclrand): bias of random numbers was lightened.

* tchdb.c (tchdbsetecode): a trick to print fatal errors only was added.

* tcbdb.c (tcbdbputimpl): a bug of mixing an useless entry on division was fixed.

* tcbdb.c (tcbdbnodesubidx): regions of useless nodes are now removed recursively.

* tcadb.c (tcadbopen): aliases of the database suffixes were added.

- Release: 1.4.8

(obache)