Use xfce_create_mixed_button() from libgui instead of the similar
xfsm_imgbtn_new() in libxfsm. Delete the latter from the library along with two
other functions which are not used.
Steps to Reproduce:
Created attachment 440
Is this committed already?
I tested this patch on xfce4-session 4.4.2, it works fine.
Partially checked in. I don't want to remove xfsm_place_trash_window() without knowing what it's for, even if it's not used right now.