Proposal: Change to library proposal process

[Ross Paterson]

On Wed, Jan 05, 2011 at 05:56:48PM +0000, Simon Peyton-Jones wrote:
> * Duncan makes a critical distinction between 
> 	API changes	
>  	Implementation changes
> 
>   [...]
>   I think it'd be good if the library-change process acknowledged
>   the above distinction explicitly, and treated the two differently,
>   as Duncan suggests.

Indeed, we should re-affirm that the library submissions process is for
interface changes only, and we need to find an easier way to get non-API
changes applied, without piling them all on Ian.