Merge viewer 2.7.6 from trunk

.hgtags

BuildParams

indra/llcommon/llversionviewer.h

indra/llvfs/CMakeLists.txt

indra/llvfs/lldiriterator.cpp

indra/llvfs/tests/lldiriterator_test.cpp

indra/newview/lllogchat.cpp

indra/newview/llpanellogin.cpp

indra/newview/llpreviewnotecard.cpp

indra/newview/skins/default/xui/de/floater_about_land.xml

indra/newview/skins/default/xui/de/floater_perm_prefs.xml

indra/newview/skins/default/xui/de/floater_snapshot.xml

indra/newview/skins/default/xui/de/floater_tools.xml

...view/skins/default/xui/de/panel_preferences_graphics1.xml

indra/newview/skins/default/xui/en/floater_tools.xml

indra/newview/skins/default/xui/en/panel_cof_wearables.xml

indra/newview/skins/default/xui/en/panel_nearby_media.xml

indra/newview/skins/default/xui/es/floater_buy_currency.xml

indra/newview/skins/default/xui/es/panel_navigation_bar.xml

indra/newview/skins/default/xui/es/strings.xml