Changes LLEnvManagerNew::setRegionChangeCallback to LLAgent::addRegionChangedCallback
Cleans up some of the timeout policies that aren't necessary any longer.
Modernizes parts of LLViewerKeyboard, updates llregistry.h
Begins changeover from LLDynamicArray to std::vector
Minor merge of newer, trivial SSA functions.
Introduces LLAgent functions: addParcelChangedCallback and canJoinGroups
Support for secondlife:///app/appearance SLapps.
Cleans up older functions.
reset_login(), among others, sets the state back to STATE_LOGIN_SHOW,
which then causes gViewerWindow->initWorldUI() to be called, which
is the (only) function that calls
LLMenuOptionPathfindingRebakeNavmesh::initialize.
In other words, it's perfectly normal to enter that function
a second time and the assert is erroneous.
