Forbid implicit construction for SimpleType structs
Forbid implicit construction for SimpleType structs

Fixes bug 616600.

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