Compatibility with USD Version 18.09 about al_usdmaya

[fabal]

Hi @madoodia , to use AL_USDMaya with USD-0.18.9 (release 18.09) you will need to recompile it but from what I've seen this should be straightforward.
We'll update the plugin soon anyway.

[pmolodo]

@fabal - Have you guys actually actually done the work for getting the code compatible with 18.09? I ask because:

a) due to a massive refactor of all of Pixar's maya code, there's a greater than normal amount of code change
b) we've actually already made all the necessary changes (mostly a lot of stuff was renamed), and we were just about to make a PR

[pmolodo]

Actually... my mistake, I forgot that you guys don't generally link against pixar's usdMaya. There aren't too many changes, and what is there mostly relates to a PR we made!

[fabal]

That's correct @elrond79 , for now at least, we don't rely on pixar's usdMaya.
USD 18.09 compatibility changes are ready on our side, it's now a matter of releasing everything internally first. Shouldn't be too long until the official release.

[pmolodo]

Hi - so when looking at this, we realized that our earlier PR actually caused some runtime linkage errors. To fix this, we've made a revised PR that completely segregates / sandboxes the pixar translator for AL proxy shapes into it's own maya plugin. Find it here:

#109

Apologies!