openlayers/ol3 — pull request #3001 by relet (2014-12-04 08:50:52+00:00)
Title: overview map uses projection parameter or base projection before defaults

Addresses #2998:
- creates a view object using options.projection if specified, default EPSG:3857 otherwise
- if a map view exists upon adding the control to a map, the default is overriden with the map view projection

(shouldn't a system default projection be defined somewhere in ol.proj.Projection.defaults or the like?)