Disable underallocation warnings in non-debug builds
Disable underallocation warnings in non-debug builds

It doesn't look like we have much traction of actually fixing
these, and there is very real cost to not being able to distcheck.

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