gobject-2.0: Bind G_TYPE_IS_ENUM and G_TYPE_IS_FLAGS
gobject-2.0: Bind G_TYPE_IS_ENUM and G_TYPE_IS_FLAGS

Fixes bug 624194.

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