D-Programming-Language/phobos — pull request #1105 by 9rnsr (2013-01-31 04:17:02+00:00)
Title: Supplemental changes for Issue 9404

[Issue 9404](http://d.puremagic.com/issues/show_bug.cgi?id=9404) - Nullable is unusable with 2.061

- Fix `isAssignable` unittest result
- Add test cases for issue 9404.

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Requires dmd change at the same time.