[Imports] CLC meadow cleanup

[Paul Norman]

> From: Martin Koppenhoefer [mailto:dieterdreist at gmail.com]
> Sent: Sunday, March 23, 2014 1:41 AM
> Subject: Re: [Imports] CLC meadow cleanup
> 
> > Am 22/mar/2014 um 21:59 schrieb Pieren <pieren3 at gmail.com>:
> >
> > Because if you remove CLC meadow, you
> > should remove all CLC landuses. And you should not stop in France but
> > go ahead for all European countries where CLC was imported because it
> > was the same source/process,
> 
> +1

Nothing about what I've mentioned is specific to France, nor did I say it
was.

I'm seeing CLC imported meadows in France, Estonia and Hungary. To get 
any proper information about frequency of meadows I'll have to do more 
analysis, all three areas are different. I can definitely see region to 
region differences in the data characteristics and data quality.

I've raised meadows as an issue for a few reasons

- Meadows are particularly bad. When cleaning them up, I've found them 
  unsalvageable, with deleting them the best course of action.
- The meadows are often giant messy multipolygons which are near-impossible 
  to edit
- Different features have different issues, and I think it's best to start 
  somewhere, and this is one that's particularly bad.

It does however sound like there are others particularly bad, but I haven't
looked at them myself yet.