EXT-4470 Several bad assumptions that LL_PATH_PER_SL_ACCOUNT is always good (which it isn't until after login)

To be reviewed by Soft!

it really has no point now - it's not used by the viewer, and the webkit plugin's private space should be opaque to the viewer.

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

Merging branches/media-on-a-prim/moap-7 down to viewer-2.0.

svn merge -r 129841:129910 svn+ssh://svn.lindenlab.com/svn/linden/branches/moss/pluginapi_05-merge@129910

svn merge -r 129913:131718 svn+ssh://svn.lindenlab.com/svn/linden/branches/pluginapi/pluginapi_05

Some branch shenannigans in the pluginapi_05 branch caused this to become a two-part merge.

Cherry-picking a change to the code that uses the copy of skins in the development tree instead of the version in the app bundle on the mac.

Reviewed by James.

ignore-dead-branch

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

merge Branch_1-20-14-Viewer-merge -> release
Includes Branch_1-20-Viewer-2 through 92456

dataserver-is-deprecated

dataserver-is-deprecated
for-fucks-sake-whats-with-these-commit-markers

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.

* WARNING *:  maintenance r64837 is not the last rev to use in the next merge. use r65269

svn merge -r59459:59476 svn+ssh://svn.lindenlab.com/svn/linden/branches/adroit.r69-75_2 into svn+ssh://svn.lindenlab.com/svn/linden/release.

corrected, removed, and updated comments throughout the code to be more useful. no code changes. SL-13762