GIR writer: Generate enum values and c:identifer attributes
GIR writer: Generate enum values and c:identifer attributes

Signed-off-by: Didier 'Ptitjes <9b75d9bd0301369bd978ce18252ab1844af4cc4b@free.fr>

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