LSL Functions for reading avatar animation positions.

For discussion.

Two new LSL functions for reading animation state of the avatar.  

vector llGetAttachmentPointPos(key agent_id, integer attach_point);

This function retrieves the position of the attachment point specified by attach_point relative to the avatar's position in world.  

rotation llGetAttachmentPointRot(key agent_id, integer attach_point);

This function retrieves the rotation of the attachment point specified by attach_point relative to the avatar's rotation in the world.

The following is true for both of these functions:

• These functions both cause the script to sleep for 0.1 second.
• These functions share a throttle with a rate of 10 calls every 5 seconds.
• These functions only work on body related attachment points.  HUD attachment points and unknown attachment numbers return ZERO_VECTOR or ZERO _ROTATION.