[pca] Hurray to PCA and We Sun Solve! They have spared me numerous hours of tedious work

[Martin Paul]

Thanks to Sean for providing feedback!

> What do you think? could this be integrated into "vanilla" pca, or
> should we make a fork?

For now I think it would be better to implement this in a wrapper to PCA or in a 
separate client. As far as I understand it, only output from PCA which is 
already provided would be required for your proposal.

Maybe Sean would be happy if there simply was a file upload option for the patch 
list on wesunsolve anyway? I think the list of patches he has isn't from PCA, 
but from some external source.

Martin.