MAINT-4077: Refactoring to add copy constructors to the LLVisualParam class and all of its derived descendants in order to clarify ownership of memory pointers.

reviewed by Nyx

cross-wearable params are fun! Values were not being updated properly for
parameters that cross multiple wearables. Created a few functions to ensure
that these values get updated and made them called from
LLAgentWearables::wearableUpdated().

Also prevented cross-wearable params from writing back to the avatar, as they
are being driven by another wearable.

Code reviewed by Bigpapi

No expected functionality change; this mostly contains cosmetic cleanup.

Reviewed by: Nyx

merging in new wearable infrastructure to get a step closer to eventually supporting multiple wearables per type. Merge tested and compiles/working on linux and windows - no obvious regressions on appearance or appearance editor. Merge generated no conflicts due to being tested in fresh re-branch in avatar-pipeline/multiple-textures-12. Merge perfomed with following command:

svn merge -r 136489:136510 svn+ssh://svn.lindenlab.com/svn/linden/branches/avatar-pipeline/multiple-textures-12 .

Progress can be tracked in DEV-32551.

 -Nyx

ignore-dead-branch

Result of svn merge -r107256:107258 svn+ssh://svn/svn/user/phoenix/license_2009_merge into trunk. QAR-1165

dataserver-is-deprecated

Result of svn merge -r71162:71205 svn+ssh://svn/svn/linden/branches/new-license into release. only changes files which are not deployed or the comments section of code.