vapigen: support no_array_length for delegate parameters
vapigen: support no_array_length for delegate parameters

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