D-Programming-Language/phobos — pull request #1443 by 9rnsr (2013-07-31 02:12:02+00:00)
Title: Make std.utf module CTFEable

Changes `toUTFz` CTFEable.

Additionally fixes a found bug:
[Issue 10732](http://d.puremagic.com/issues/show_bug.cgi?id=10732) - Example code for std.utf.toUTFindex does not work