More sceUtility* changes

This mainly keeps track of the "current dialog type."  The PSP refuses to run two dialogs at once, so this tries to mimic its error messages when you call functions at the same time.

This improves the status of a few of my minis.  There's probably more to it, though.

Also, there is the risk this will break savedata working in a game when there are other things going wrong.

(also cleaned up some whitespace in the sceUtility table, that's why there's some diff noise there.)

-[Unknown]