darcs patch: Add dropped STM invariants functions

[Ian Lynagh]

On Thu, Sep 20, 2007 at 05:59:55AM -0700, shelarcy wrote:
>
> [Add dropped STM invariants functions
> shelarcy <shelarcy at gmail.com>**20070920125633] {
> hunk ./Control/Monad/STM.hs 27
> +        always,
> +        alwaysSucceeds,
> }

I'm a little lost - what were these functions dropped from?
They aren't exported by Control.Monad.STM in GHC 6.6.1 either.

I'm not overly familiar with the STM package, but this seems to be an
interface change, so I think it ought to go through
http://www.haskell.org/haskellwiki/Library_submissions


Thanks
Ian