bug #65082 - extension to json_ecnode for not-utf8 char input.

See: https://bugs.php.net/65082

Proposal:
https://github.com/remicollet/pecl-json-c/commit/5a499a4550d1f29f1f8eeb1b4ca0b01a33c64779

I think this request make sense and think to apply this enhancement in
php 5.5.

Do you agree ?
Other ideas ?

Remi.