qulogic/libgnt

*** Plucked rev ea18c8ce78c0229a5b968aab268f38e9bcae0aee (8e1d807c1aadfb510e14f047d2cf00e0c06be465):
Fix building finch & libgnt using older gcc or non-gcc compilers that do
not understand G_GNUC_NULL_TERMINATED