A CRS is now defined for all subsets as a whole and not on a per-subset basis. Changed API and re-implemented in all used places.
Updated Coverage renderers to new Subsets API.
Updated to new Subsets API. Disallowing old subset definition.
Adding 'subsettingCrs' parameter for both GET/KVP and POST/XML.
Updating tests for WCS CRS extension.
Updating to new Subsets API.
Fixing KVP subset regex and parsing.
Fixing to new Subsets API.
Updated expected test results.
Small fix.
Updating autotest.
Merge branch 'master' into crs-extension

Conflicts:
	autotest
	eoxserver/services/ows/wcs/v20/getcoverage.py
Merged autotest