add stog 0.7.0
add stog-writing and stog-rdf 0.7.0
rename stog-rdf dir
fix md5sum for stog 0.7.0 afeter uploading new archive
add dbforge 2.0.1
Merge pull request #391 from zoggy/master

add stog 0.7.0, stog-rdf 0.7.0, stog-writing 0.7.0