gtk2 rbgdkdisplay.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtktreeviewcolumn.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtkdrag.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtktreerowreference.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtkstock.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtktreeview.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtktextiter.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtkfilechooser.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtkdialog.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtkmenubar.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtkwindow.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtkiconview.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtkimage.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtkscrolledwindow.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 rbgtkaction.c: drop GTK_CHECK_VERSION(2,8,0)
gtk2 global.h: drop GTK_CHECK_VERSION(2,8,0)
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