girwriter: Write deprecated attributes when appropriate
girwriter: Write deprecated attributes when appropriate

Fixes bug 614712.

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