What is the Go/NoGo gauge for releases?

[Nick Sabalausky via Digitalmars-d]

On 7/12/2014 8:35 PM, Andrew Edwards wrote:
> Moved from D.announce for further discussion by request:
>
> On Saturday, 12 July 2014 at 00:13:47 UTC, David Nadlinger wrote:
>> For convenience, the list of unresolved issues marked as regressions:
>> https://issues.dlang.org/buglist.cgi?bug_severity=regression&resolution=---
>>
>>
>> Seems like there is still quite a way to go until we can release RC1.
>>
>> David
>
[...]
> So I have some questions: What is the magic number that will
> trigger the release? What happens if we never reach that number?
> Do we just continue waiting for it or do we make a decision at
> some point that it's time? If so, how long do we wait? Is there
> one person who makes the decision, or is it decision automatic?
> If there is a person, who is it?

My understanding (I could be wrong) is the general rule of thumb has 
been "No *new* regressions compared to the previous release".