Merge branch 'main' of https://github.com/secondlife/viewer

doc/contributions.txt

indra/CMakeLists.txt

indra/cmake/00-Common.cmake

indra/cmake/APR.cmake

indra/cmake/Atmosphere.cmake

indra/cmake/Audio.cmake

indra/cmake/Boost.cmake

indra/cmake/BuildPackagesInfo.cmake

indra/cmake/CEFPlugin.cmake

indra/cmake/CMakeLists.txt

indra/cmake/CURL.cmake

indra/cmake/Copy3rdPartyLibs.cmake

indra/cmake/DBusGlib.cmake

indra/cmake/DragDrop.cmake

indra/cmake/EXPAT.cmake

indra/cmake/ExamplePlugin.cmake

indra/cmake/FMODSTUDIO.cmake

indra/cmake/FindAPR.cmake

indra/cmake/FindGooglePerfTools.cmake

indra/cmake/FindHUNSPELL.cmake