Merge branch 'contribute' into DRTVWR-577-maint-S

.github/workflows/stale.yaml

doc/contributions.txt

indra/cmake/Variables.cmake

indra/llappearance/llavatarappearance.cpp

indra/llappearance/llavatarappearance.h

indra/llappearance/llavatarappearancedefines.cpp

indra/llappearance/llavatarjoint.cpp

indra/llappearance/llavatarjointmesh.cpp

indra/llappearance/lldriverparam.cpp

indra/llappearance/lllocaltextureobject.cpp

indra/llappearance/llpolymesh.cpp

indra/llappearance/llpolymorph.cpp

indra/llappearance/llpolyskeletaldistortion.cpp

indra/llappearance/lltexglobalcolor.cpp

indra/llappearance/lltexlayer.cpp

indra/llappearance/lltexlayerparams.cpp

indra/llappearance/llwearable.cpp

indra/llaudio/llaudioengine.cpp

indra/llcharacter/llanimationstates.cpp

indra/llcharacter/llbvhloader.cpp