[MAINT-8846] - fixing duplicate id in avatar_lad.xml fixrs character test female crash. code cleanup.

[MAINT-8081] - bakes on mesh. 1st pass. changed texture panel to select bakes on objects. handle magic bake ids in LLViewerObject.

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.