Revise remove command
Revise remove command

1. print a list of all files and dependencies of those files used by apt-cyg
2. if any are found in the files list of the package to be removed, then fail

Unrelated, added an echo each time a postinstall script is run, the name of the
script

ilatypov/apt-cyg,transcode-open/apt-cyg,jobscale/apt-cyg,balanx/apt-cyg