Operator overloading -- lets collect some use cases

[Christian Kamm]

Don wrote:
>> BTW, Blade is currently unusable because of the CTFE memory allocation
>> bug. 

Bill Baxter wrote:
> A good opportunity to mention once again that LDC guys have figured
> out some compile settings that seem to fix the problem.
> http://d.puremagic.com/issues/show_bug.cgi?id=1382
> From what I can tell they've had it fixed in LDC since mid-November by
> applying that change with no problems.  Christian K.,  can you confirm
> that it's been working fine in LDC?

We have not tested it extensively (though we did run our tests as well as
dstress and found only improvements) and have not enabled boehm-gc by
default. 
The current plan is to include two versions of LDC in the release: the
default one and an experimental one that uses the boehm-gc hack and has the
forward reference fixes applied.