bleh, i did it for 7.2.2 and never really thought much of it.
seemed simple to do..
you want to:
1. move the smiley icon (toolbar) over to the left.. same thing
2. then you change the width deal to iterate over the smileys..
should be VERY similar, if you just look @ the subtle differences.
if it's not obvious, i can maybe look a little closer at some point and try to gin it up for the 'coding impaired'
(no disrespect intended)