Put the instance_pos attribute in delegates in code writer
Put the instance_pos attribute in delegates in code writer

Fixes bug 609591.

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