Haiku: remove invalid feature definitions

[jessicah]

• Fixes the functional/hash library
• Fixes problems with the thread library

[jzmaddock]

I'll merge this from develop when master is open again.

[jessicah]

If there will be an rc4 to go out, may this and the other request be considered for inclusion?

[jzmaddock]

If there will be an rc4 to go out, may this and the other request be
considered for inclusion?

Sorry, but as mentioned on the mailing list it's too late for anything
except complete show-stoppers now.

[jessicah]

As I mentioned on the list, without these, it pretty much is a showstopper for the Haiku platform, whose support I only managed to finally get merged in the beta.

[jzmaddock]

As I mentioned on the list, without these, it pretty much is a
showstopper for the Haiku platform, whose support I only managed to
finally get merged in the beta.

I understand, but this is support for a new platform, not a regression.
If you want to ask the release managers on the mailing list for
permission to merge by all means do so, but I can be pretty sure what
their answer will be.

[jessicah]

Can this be merged now?

[jzmaddock]

Done.