SL-433 - fix for mesh eye scaling with eye size slider. Previous values were based on incorrectly sized reference eyes.

SL-242 - more tweaks around alt eyes and wings. Alt eyes are now parented to face root, and alt eyes animate along with the original eyes inside the LLHeadRotMotion code.

SL-276 - small skeleton file tweaks to 'end' and 'connected' attributes (no functional impact on viewer)

SL-344 - fixed a problem in avatar_lad with some params in wrong group, added diagnostics to make this easier to detect.

SL-276 - move alt eyes out of face root, match coords exactly. Return face root to 3 digit precision.