Merge pull request #1352 from bartvde/wps-client-callback

allow a callback for describeProcess (r=@ahocevar,@marcjansen)
Only parse values for certain named parameters
Merge branch 'sld-cssparameter' of https://github.com/flansch/openlayers into sld-cssparameter

Conflicts:
	lib/OpenLayers/Format/SLD/v1.js