Added -delete-snapshot to deregister-image
whitespace and logging cleanup
Debug console on mac
jline2 support
Remove obsolete support for old credentials format
Integrate jline2 for cygwin, dos cmd.exe and mintty and IDE's (like eclipse).
Determine when jline will and will not work correctly and fallback to system IO or Console IO.
Requies additions to cygwin startup script to detect and run stty commands and in java to use jline in mintty even though Java finds no console.

Updated/repaired exports in a xmlsh commands directory tree (many minor edits)