add tuna overlay

toro

 Changes to be committed:
	modified:   devices/raumzero_toro.mk
	new file:   overlay/common/frameworks/base/core/res/res/drawable-nodpi/default_wallpaper.jpg
	new file:   overlay/tuna/frameworks/base/core/res/res/values/arrays.xml
	new file:   overlay/tuna/packages/apps/Settings/res/values/config.xml
	new file:   overlay/tuna/packages/apps/Torch/res/values/config.xml