inline functions.
  (onigenc_mbclen_charfound): removed.
  (onigenc_mbclen_needmore): removed.
  (onigenc_mbclen_recover): removed.
  (ONIGENC_MBCLEN_CHARFOUND): removed.
  (ONIGENC_MBCLEN_CHARFOUND_P): defined.
  (ONIGENC_MBCLEN_CHARFOUND_LEN): defined.
  (ONIGENC_MBCLEN_INVALID): removed.
  (ONIGENC_MBCLEN_INVALID_P): defined.
  (ONIGENC_MBCLEN_NEEDMORE): removed.
  (ONIGENC_MBCLEN_NEEDMORE_P): defined.
  (ONIGENC_MBCLEN_NEEDMORE_LEN): defined.
  (ONIGENC_MBC_ENC_LEN): use onigenc_mbclen_approximate.

* regenc.c (onigenc_mbclen_approximate): defined.

* include/ruby/encoding.h (MBCLEN_CHARFOUND): removed.
  (MBCLEN_INVALID): removed.
  (MBCLEN_NEEDMORE): removed.
  (MBCLEN_CHARFOUND_P): defined.
  (MBCLEN_INVALID_P): defined.
  (MBCLEN_NEEDMORE_P): defined.
  (MBCLEN_CHARFOUND_LEN): defined.
  (MBCLEN_NEEDMORE_LEN): defined.

* encoding.c: use new API.

* re.c: ditto.

* string.c: ditto.

* parse.y: ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15280 b2dd03c8-39d4-4d8f-98ff-823fe69b080e