Stop setting an empty AM_RUNTESTFLAGS
Stop setting an empty AM_RUNTESTFLAGS

nmav/libffi,rth7680/libffi,biosbits/libffi,bgarrels/libffi,Distrotech/libffi,plicease/libffi,joshtriplett/libffi,s1341/libffi,rth7680/libffi,Distrotech/libffi,bgarrels/libffi,biosbits/libffi,Distrotech/libffi,Distrotech/libffi,plicease/libffi,nmav/libffi,bgarrels/libffi,nmav/libffi,bgarrels/libffi,s1341/libffi,nmav/libffi,joshtriplett/libffi,plicease/libffi,joshtriplett/libffi,biosbits/libffi,Pan7/libffi,Pan7/libffi,joshtriplett/libffi,s1341/libffi,Pan7/libffi,Pan7/libffi,plicease/libffi,rth7680/libffi,biosbits/libffi,s1341/libffi,rth7680/libffi