phobos commit, revision 2218


user: SHOO

msg:
Retry Issue 5340

http://d.puremagic.com/issues/show_bug.cgi?id=5340

And added some unittest.

The changes of std.base64 are caused by char[] NOT being OutputRange.
is(R2 == char[]) && isOutputRange!(R2, char) always returns false.

http://www.dsource.org/projects/phobos/changeset/2218