no [deprecated] prefix just like with other jdbc- gems
incorrect jdbc-jtds VERSION + do not rescue all LoadErrors
this will allow to raise the LoadError on non Java 7 with jTDS 1.3
fix drivers task doing unnecessary base build/release/install
jdbc-jtds is fine to build on Java 6 thus not sure why it's filtered
also an *all:release* task is quite dangerous - remove it