after fix Issue #63, iconv(3) can't detect incomplete input or shift state.

[Takehiko NOZAKI]

try following:

$ printf "\xA1" | iconv -f eucJP -t UTF-8

$ printf "\xA1" | /usr/pkg/bin/iconv -f eucJP -t UTF-8
/usr/pkg/bin/iconv: (stdin):1:0: incomplete character or shift sequence

[Takehiko NOZAKI]

my idea is:

• all encoding module should implement _citrus_stdenc_mbtocs_state_reset() and if incomplete chars in mbstate_t, throw EINVAL.
• iconv_std checks mbstate_t by _citrus_stdenc_get_state_desc() before call _citrus_stdenc_mbtocs_state_reset().

[Takehiko NOZAKI]

BUGFIX: Issue #72 -- after fix Issue #63, iconv(3) can't detect incomplete input or shift state.

→ <<cset acbef0854e4c>>