[RJ-Client] Added workaround for console input by dbg operations

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[*] Updated declarations for RJ-Client 2.0.1

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[RJ-REnv] Improved package for R environments
  - Renamed IRPackageDescription to IRPkgDescription for uniform
    naming
  - Added implementation for IRPkgDescription
  - Added some more JavaDoc

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