Fix virtual methods returning structs
Fix virtual methods returning structs

Fixes bug 595954.

lovebug356/vala,Distrotech/vala,GNOME/vala,GNOME/vala,severinh/vala,spidermonkdust/vala,spidermonkdust/vala,frida/vala,themiwi/vala,jessevdk/vala,Jc2k/vala,tjol/vala-tjol,playya/vala,themiwi/vala,flobrosch/vala-fixes,jessevdk/vala,frida/vala,tjol/vala-tjol,frida/vala,Distrotech/vala,frida/vala,tjol/vala-tjol,kamanashisroy/aroop,flobrosch/vala-fixes,Jc2k/vala,spidermonkdust/vala,Distrotech/vala,severinh/vala,xdave/pvala,rvu95/vala,playya/vala,playya/vala,phako/vala,GNOME/vala,kamanashisroy/aroop,jessevdk/vala,kamanashisroy/aroop,GNOME/vala,frida/vala,severinh/vala,lovebug356/vala,rvu95/vala,themiwi/vala,flobrosch/vala-fixes,phako/vala,rvu95/vala