Further work to reduce pulsing.

Further work to reduce pulsing.

These changes are specifically targeted at fade transitions to
static scenes. Here we want to place a GF/ARF immediately
after the fade and prevent an ARF just  before the fade.

Also some code lines and comment lines shortened to 80 chars
while I was there.

Change-Id: Iefdc09a4fa7b265048fc017246b73e138693950f