[Merge] lp:~ssweeny/location-service/fusion-provider.15.04 into lp:location-service/15.04

[Scott Sweeny]

> One of the changes doesn't seem to work, but the others are done.

The way LP displays the comments is confusing since the code is updated so I'm going to repeat myself here:

For the changes in fusion_provider.cpp:

These two changes don't work for me. The tests freeze up with a "this->is_initialized()" assertion failure when I use '*' notation with last_position, but the compile fails when I don't use it.
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https://code.launchpad.net/~ssweeny/location-service/fusion-provider.15.04/+merge/287242
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