Proposed release criteria revisions

["Jóhann B. Guðmundsson"]

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Given that we are revisting the release criteria I propose that we 
update ourselves to more recent times to reflect the project more 
accurately.

Due to historical reasons the readiness of the KDE spin has had the 
ability to block the final release of the "Default" spin hence I 
propose  that no spin can block the release of the "Default" what ever 
that may be or "All" spin need to meet the release criteria or we slip.

Thoughts?

JBG