> $RPM_BUILD_DIR/xscreensaver-%{version}/exes-non-gl
( cd hacks/glx ; list_files install ) \
> $RPM_BUILD_DIR/xscreensaver-%{version}/exes-gl
> $RPM_BUILD_DIR/xscreensaver-%{version}/exes-non-gl
( cd hacks/glx ; list_files install ) \
> $RPM_BUILD_DIR/xscreensaver-%{version}/exes-gl