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
Merge pull request #486 from denis-sh/fix-Issue-10081

Issue 10081 - Incorrect char array comparison
Merge branch 'master' of https://github.com/D-Programming-Language/druntime
Remove unittests from object.di
Merge pull request #488 from ibuclaw/rmunittest

Remove unittests from object.di
Merge branch 'master' of https://github.com/D-Programming-Language/druntime