Update the release notes with the abandonment of support for the Groovy 1.7.x series.
Update the release notes with the abandonment of support for the Groovy 1.7.x series.

codehaus/gant,russel/Gant,russel/Gant,codehaus/gant,Gant/Gant,Gant/Gant,codehaus/gant,russel/Gant,Gant/Gant