girwriter: Skip methods with va_list parameters
girwriter: Skip methods with va_list parameters

gobject-introspection does not currently support va_list parameters.

frida/vala,GNOME/vala,flobrosch/vala-fixes,severinh/vala,jessevdk/vala,kamanashisroy/aroop,Distrotech/vala,frida/vala,flobrosch/vala-fixes,kamanashisroy/aroop,spidermonkdust/vala,playya/vala,spidermonkdust/vala,tjol/vala-tjol,GNOME/vala,Distrotech/vala,rvu95/vala,spidermonkdust/vala,GNOME/vala,tjol/vala-tjol,severinh/vala,frida/vala,Distrotech/vala,rvu95/vala,GNOME/vala,xdave/pvala,flobrosch/vala-fixes,jessevdk/vala,rvu95/vala,playya/vala,playya/vala,severinh/vala,jessevdk/vala,tjol/vala-tjol,frida/vala,kamanashisroy/aroop,frida/vala