Implement ToTmp for Option<&str>
Implement ToTmp for Option<&str>

gkoz/gtk-rs-cairo,EPashkin/rust-gnome-gtk,rust-gnome/cairo,daa84/gtk,gkoz/gtk-rs-glib,gkoz/rust-gnome-glib,gkoz/rust-gnome-gtk,LordSentox/gtk,Susurrus/gtk,EPashkin/rust-gnome-glib,nicokoch/glib,insanebits/gtk,gkoz/rust-gnome-gtk,gkoz/gtk-rs-gtk,rust-gnome/gtk,EPashkin/rust-gnome-gtk,drewet/gtk,gkoz/gtk-rs-pango,Susurrus/gtk,rtsuk/cairo,gkoz/rust-gnome-cairo,LordSentox/gtk,insanebits/gtk,mitaa/gtk,gkoz/gtk-rs-gtk,daa84/gtk,rust-gnome/gtk,drewet/gtk,mitaa/gtk,rust-gnome/glib,Susurrus/glib