udp texture throttle and move it to the task throttle. Since most
viewers are using http textures, the udp texture throttle is holding
onto bw that could be used for more responsive prims updates. See
the documentation for CannibalizeTextureRate in OpenSimDefaults.ini.
Option is disabled by default.
This appears to improve cpu usage since launching a new thread is more expensive than performing a small amount of inline logic.
However, needs testing at scale.
