Patch OpenLayers to disallow google's satelite tilt

[alsaihn]

When using google maps, low zoom levels now tilt to 45 degrees. This can cause markers to not line up correctly. There's a patch for turning it off, due to be in the 2.13 release. The patch doesn't allow changes in heading.

Patch: http://trac.osgeo.org/openlayers/ticket/3615
Google info: https://developers.google.com/maps/documentation/javascript/maptypes?hl=en#Enabling45DegreeImagery