genie: Add support for the \v escape charactor
genie: Add support for the \v escape charactor

https://bugzilla.gnome.org/show_bug.cgi?id=664689

GNOME/vala,frida/vala,frida/vala,GNOME/vala,GNOME/vala,frida/vala,frida/vala,GNOME/vala,frida/vala