Log Message:
Update oniguruma to 5.9.2.

* Add LICENSE.

History

2010/01/09: Version 5.9.2

2010/01/05: [bug]  fix utf16be_code_to_mbc() and utf16le_code_to_mbc().
2008/09/16: [bug]  fix memory leaks in parse_exp().
2008/08/01: [bug]  fix memory leaks.
2008/06/17: [bug]  invalid type of argument was used
                   in onig_st_lookup_strend().
2008/06/16: [bug]  invalid CaseFoldMap entry in ISO-8859-5. 0xdf -> 0xde
2008/02/19: [new]  add: onig_reg_init().
2008/02/19: [new]  add: onig_free_body().
2008/02/19: [new]  add: onig_new_without_alloc().
2008/02/19: [API]  rename onig_alloc_init() to onig_reg_init(),
                   and argument type changed.
2008/01/31: [impl] move UTF16_IS_SURROGATE_XXX() to regenc.h.
2008/01/30: [bug]  (thanks akr)
                   fix euctw_islead().
2008/01/23: [bug]  update enc/koi8.c.