Does a cheesy XORing with a fixed UUID to
convert an asset_id to a shadow_id

- assetID ( UUID)
- asset_id value to obfuscate

Obfuscated shadow_id value
Assembly: OpenMetaverse(Module: OpenMetaverse.dll) Version: 0.9.3.3318 (0.9.3.3318)
Assembly: OpenMetaverse(Module: OpenMetaverse.dll) Version: 0.9.3.3318 (0.9.3.3318)