#914 Theme "motif" not show the "menuButton.xpm" icon

[miner]

Hi~
I use a motif theme under icewm.
In $HOME/.icewm/themes/motif-blue/default.theme, my setting is
Look=motif
ShowMenuButtonIcon=0

I have "menuButtonA.xpm", "menuButtonI.xpm" and "menuButton.xpm" in $HOME/.icewm/themes/motif-blue/ ,
But I found icewm will not show any "menuButton*.xpm" icon on the title bar.

Would you fix this problem?
Thank you~