Issue 10081 - Incorrect char array comparison

`char[]` type info is incorrectly inherited from `byte[]` type info instead of `ubyte[]` one so char arrays are compared like arrays of signed bytes.

Issue URL: http://d.puremagic.com/issues/show_bug.cgi?id=10081

P.S.
It's rather frustrating to see such bugs. I hope the pull will be merged soon.