[Dbix-class] Patch: inflate_column

[Matt S Trout]

Bernhard Graf wrote:
> Since I have a current DBIC working copy on my HD now, I also offer this 
> patch to be applied. It lets you set an inflator for multiple columns 
> at once, as described in my email one month ago:
> http://lists.scsys.co.uk/pipermail/dbix-class/2006-October/002687.html

Again, NO TESTS.

Please don't expect to me to apply any patch without tests unless it's a 
bugfix for something for which tests have already been provided.