SL-323: first pass at ripping out old updater

indra/CMakeLists.txt

indra/newview/CMakeLists.txt

indra/newview/llappviewer.cpp

indra/newview/llappviewer.h

indra/newview/llappviewerwin32.cpp

indra/newview/llfloaterabout.cpp

indra/newview/lllogininstance.cpp

indra/newview/lllogininstance.h

indra/newview/llstartup.cpp

indra/newview/llviewercontrol.cpp

indra/newview/llviewermenu.cpp

indra/newview/tests/lllogininstance_test.cpp

indra/viewer_components/CMakeLists.txt

indra/viewer_components/updater/CMakeLists.txt

indra/viewer_components/updater/llupdatechecker.cpp

indra/viewer_components/updater/llupdatechecker.h

indra/viewer_components/updater/llupdatedownloader.cpp

indra/viewer_components/updater/llupdatedownloader.h

indra/viewer_components/updater/llupdateinstaller.cpp

indra/viewer_components/updater/llupdateinstaller.h