It's as big as the usual popup and makes it easier to control the volume. Also makes our fine-grained volume changes more visible.
popup.xcf is updated to contain the volume layers.
Idea and some skin code taken from FS#12254.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31056 a1c6a512-1295-4272-9138-f99709370657
