Local inv item creation. Oh my.

indra/llcommon/llassettype.cpp

indra/llcommon/llassettype.h

indra/newview/CMakeLists.txt

indra/newview/alviewermenu.cpp

indra/newview/llfloaternewlocalinventory.cpp

indra/newview/llfloaternewlocalinventory.h

indra/newview/llviewerfloaterreg.cpp

...view/skins/default/xui/en/floater_new_local_inventory.xml

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

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