Updated JSch
  - Updated to JSch 0.1.51
  - Updated to JZlib 1.1.3
  - Updated environment/build to Java 7

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
Added source feature to repo

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>