Support NOCONFIGURE (from gnome-common)
Support NOCONFIGURE (from gnome-common)

gnome-common's autogen.sh uses NOCONFIGURE to skip running configure.
Support that in addition to the current AUTOGEN_SUBDIR_MODE.

jadahl/gtk,davidgumberg/gtk,davidgumberg/gtk,msteinert/gtk,grubersjoe/adwaita,jadahl/gtk,bratsche/gtk-,davidgumberg/gtk,Adamovskiy/gtk,chergert/gtk,bratsche/gtk-,simokivimaki/gtk,Distrotech/gtk2,jadahl/gtk,davidt/gtk,alexlarsson/gtk,davidgumberg/gtk,Adamovskiy/gtk,jigpu/gtk,jessevdk/gtk,simokivimaki/gtk,ahodesuka/gtk,ahodesuka/gtk,chergert/gtk,jigpu/gtk,msteinert/gtk,ahodesuka/gtk,jessevdk/gtk,ahodesuka/gtk,chergert/gtk,alexlarsson/gtk,jessevdk/gtk,Distrotech/gtk2,jessevdk/gtk,davidgumberg/gtk,grubersjoe/adwaita,Distrotech/gtk2,Lyude/gtk-,Distrotech/gtk2,msteinert/gtk,jadahl/gtk,jigpu/gtk,alexlarsson/gtk,grubersjoe/adwaita,davidt/gtk,ebassi/gtk,ebassi/gtk,davidt/gtk,davidt/gtk,grubersjoe/adwaita,Lyude/gtk-,alexlarsson/gtk,davidgumberg/gtk,alexlarsson/gtk,Adamovskiy/gtk,jigpu/gtk,msteinert/gtk,ebassi/gtk,Sidnioulz/SandboxGtk,Lyude/gtk-,grubersjoe/adwaita,davidgumberg/gtk,jadahl/gtk,ebassi/gtk,grubersjoe/adwaita,Adamovskiy/gtk,jessevdk/gtk,Lyude/gtk-,bratsche/gtk-,Lyude/gtk-,ahodesuka/gtk,grubersjoe/adwaita,Distrotech/gtk2,jessevdk/gtk,simokivimaki/gtk,ahodesuka/gtk,jigpu/gtk,ebassi/gtk,alexlarsson/gtk,Distrotech/gtk2,bratsche/gtk-,bratsche/gtk-,simokivimaki/gtk,Adamovskiy/gtk,chergert/gtk,Sidnioulz/SandboxGtk,jadahl/gtk,grubersjoe/adwaita,ahodesuka/gtk,davidt/gtk,chergert/gtk,Lyude/gtk-,Lyude/gtk-,Sidnioulz/SandboxGtk,alexlarsson/gtk,Sidnioulz/SandboxGtk,msteinert/gtk,alexlarsson/gtk,Lyude/gtk-,jigpu/gtk,jigpu/gtk,jadahl/gtk,Adamovskiy/gtk,ahodesuka/gtk,bratsche/gtk-,ebassi/gtk,davidt/gtk,msteinert/gtk,Adamovskiy/gtk,jessevdk/gtk,jadahl/gtk,simokivimaki/gtk,Sidnioulz/SandboxGtk,Adamovskiy/gtk,jigpu/gtk,chergert/gtk,chergert/gtk,chergert/gtk,simokivimaki/gtk,davidgumberg/gtk,Sidnioulz/SandboxGtk