MAINT-7081: Merge from lindenlab/viewer64.

indra/cmake/CMakeLists.txt

indra/cmake/Copy3rdPartyLibs.cmake

indra/cmake/DeploySharedLibs.cmake

indra/cmake/GetPrerequisites_2_8.cmake

indra/cmake/NGHTTP2.cmake

indra/llcorehttp/CMakeLists.txt

indra/llcorehttp/_httplibcurl.cpp

indra/llcorehttp/_httpoprequest.cpp

indra/llmessage/CMakeLists.txt

indra/llplugin/CMakeLists.txt

indra/newview/CMakeLists.txt

indra/newview/lltexturefetch.cpp

indra/newview/llviewerregion.cpp

indra/newview/viewer_manifest.py

scripts/packages-formatter.py