Stop regexing "apt-cyg show"
Stop regexing "apt-cyg show"

Packages supplied to "apt-cyg show" must now match exactly. This is in line
with "apt-cache show".

Also if a package is not found it will now give a message.

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