[Catalyst] Setting $c->req->{base}

[Wade.Stuart at fallon.com]

> I think the begin method is much simpler than using $c->config->{base}
> as in your patch.

I beg to differ,  the most common case of modifying base would be a simple
static remap, which make sense to be in core like above for newbies to Cat.
If you want complex handling of general case base ops, then make that a
plugin. but that's just MHO.
-Wade

>
> -Andy