change 'this' pointer for structs to reference type

[Leandro Lucarella]

Walter Bright, el  2 de noviembre a las 00:01 me escribiste:
> Andrei suggested this change, and I think it is a great idea. D ought to be 
> moving away from pointers for routine work, and this would make a lot of sense.
> 
> It would entail some changes to user code, mostly when dealing with the opCmp and 
> opEquals member functions. The function signatures for them would be changed to 
> opCmp(ref const S).

I saw you made some changes in phobos for this. But I think there is
a mistake in changeset 866[1]. I think the file trunk/phobos/std/string.d
was not supposed to be commited, because it moves back from onRangeError
to onArrayBoundsError, which was changed in the previous commit (and it's
totally unreleated to the *this -> this change =).

[1] http://www.dsource.org/projects/phobos/changeset/866

-- 
Leandro Lucarella (luca) | Blog colectivo: http://www.mazziblog.com.ar/blog/
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