Add vertical space between functions and between events; format the attachment points list; add inline comments indicating the meaning of the 90xxx codes.
* Update README.md
* Update and rename [AV]LockGuard-object.lslp to [AV]LockGuard-object.lsl
* Update [AV]LockGuard-object.lsl
* Update [AV]LockGuard-object.lsl
* Update [AV]LockGuard-object.lsl
* Update and rename [AV]LockGuard.lslp to [AV]LockGuard.lsl
* Update and rename shared props via BUTTON.lslp to shared props via BUTTON.lsl
* Update and rename shared props via POSE.lslp to shared props via POSE.lsl