a read-only file descriptor is enough for libsgutils
a read-only file descriptor is enough for libsgutils

The hal callout was failing on my mandriva 2010.0 system because it didn't
like the R/W file descriptor

git-svn-id: 76cb8c96a56e2e269d2baf461dc2f0a164399ff5@2386 f01d2545-417e-4e96-918e-98f8d0dbbcb6

hyperair/libgpod,hyperair/libgpod,hyperair/libgpod,hyperair/libgpod,neuschaefer/libgpod,neuschaefer/libgpod,neuschaefer/libgpod,neuschaefer/libgpod,hyperair/libgpod,neuschaefer/libgpod