CloudMade/Leaflet — pull request #802 by Mithgol (2012-07-14 03:13:32+00:00)
Title: Detect retina displays and adjust wmsParams.width and wmsParams.height accordingly

Porting #586 to `TileLayer.WMS.js` as requested in #789.

For WMS layers, if I understand correctly, it is enough to double `wmsParams.width` and `wmsParams.height` for retina displays, leaving everything else intact.