Also small fixes, some spelling, some important; synchronize with upstream a bit..
Jonathan Yap: STORM-1870 Avatar tracking beacon doesn't get disabled if DESTINATION_REACHED_RADIUS is reached
This makes the class API a bit more sane, although
only a bit, because I had to leave it working with
possibly new code merged in from LL: the API can't
really change. I also removed some unused code.
While reviewing how LLFrameTimer worked however,
I did find a few instances where things where broken:
* sFrameDeltaTime wasn't correctly updated (more
than once per frame and therefore erratic). This
only influenced scrolling speed, but still.
* While dragging an inventory item, the scroll
arrows of a tab container didn't work
(LLTabContainer::handleDragAndDrop).
* Map zoom interpolation was broken (it interpolated
between A and B, but used the already updated
interpolation for A the next frame...
(added mCurZoomValInterpolationStart).
LLInstanceTracker added to llcommon (pulled from llui in v2 for usage elsewhere)
LLEventTimer now using LLInstanceTracker
Updated LLLiveAppConfig (Though it appears unused, really)
processor.h is obsolete, thus removed. (llprocessor.h replaces it)
Wrapped gSettings and the global objects returned by Settings::get() and
Globals::get() in AIThreadSafe, forcing thread-safe access.
This solves the problem of possible corruption of the various LevelMap's
in LLError::Settings due to thread unsafe accesses.
