[Appearance/Misc]

- fixed : LLAppearanceMgr::filterWearableItems() doesn't properly filter body parts
- fixed : LLWearableList::processGetAssetReply() creates multiple LLWearable instances for the same asset UUID
    -> fix for http://jira.secondlife.com/browse/VWR-20608
- changed : deprecated removeItemFromAvatar() in favour of having LLAppearanceMgr::removeItemFromAvatar() handle it directly/correctly
    -> wearables can't be worn/removed in 2.X without the viewer already having an LLWearable instance for it anyway
- added : InitialWearablesLoadedSignal signal which is emitted *once* when the initial wearables are loaded
- fixed : attachments sometimes detach only to instantly get reattached after logon
- added : LegacyMultiAttachmentSupport debug setting to route "secondary attachment points" to the primary attachment point
    -> maps secondary attachment point range [39,68] onto [1,30]
    -> only dislays "secondary attachment points" correctly for *other* avatars (by design)

--HG--
branch : Appearance-Misc