Adding a new visual param that allows users to manually adjust an offset for how far off the ground (+ or -) their avatar's root bone is. Supports the +-2m range people are used to adjusting in their viewers, but new implementation should support server-generated appearances. Conflicts: indra/newview/character/avatar_lad.xml indra/newview/llagent.cpp indra/newview/llcallingcard.cpp indra/newview/skins/default/xui/en/strings.xml