Fix #2 Windows: impossible to take a screenshot of all screens
Windows: revert previously removed ctypes libraries
GNU/Linux: test if /etc/crontab exists before operate
GNU/Linux: add -e flag to prevent a bad uninstallation
Contributor: add Eownis & Daniel Cartron, thanks you!
GNU/Linux: use of spaces instead of tabs
Mac OSX port, first try
[L,M]: remove -v flag from installation script, not present on OSX
[L] Add a script to automate package creation
Add a script to automate SHA1 calculation
Fix sorting into SHA1 calculation script