add use of v1.1 update request protocol, with fallback to v1.0

indra/newview/CMakeLists.txt

indra/newview/app_settings/settings.xml

indra/newview/llappviewer.cpp

indra/newview/llhasheduniqueid.cpp

indra/newview/llhasheduniqueid.h

indra/newview/lllogininstance.cpp

.../newview/skins/default/xui/en/panel_preferences_setup.xml

indra/newview/tests/lllogininstance_test.cpp

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/llupdateinstaller.cpp

indra/viewer_components/updater/llupdaterservice.cpp

indra/viewer_components/updater/llupdaterservice.h

...viewer_components/updater/tests/llupdaterservice_test.cpp