configure.ac: deprecate sourceview and gnomevfs packages
configure.ac: deprecate sourceview and gnomevfs packages

darcs-hash:20081219165501-21862-4b82c07af608623c793337f3b7c336276b113529.gz

thiagoarrais/gtk2hs,thiagoarrais/gtk2hs,thiagoarrais/gtk2hs