Add support for XML3D output format in W3DS module.
Add support for octet-stream output to XML3D request. This output format is used to optimize network traffic and only elevation information is returned.
Add support for predefined LODset to XML3D output. Scale is from 1 to 10 and 10 is with maximum details.
c) 2014 Open Source Geospatial Foundation (GSIP-118)
Merge pull request #517 from Cyberlightning/xml3d

Add XML3D output format to W3DS community module