[solo.utils] print_package_info: also print SHA1, SHA256 and GPG info
[eit.utils] print_package_info: also print SHA1, SHA256 and GPG info
[entropy.server] insert the package SHA1 checksum into the file name

This commit partially reverts commit d6b7a21314fdaa53563b399aa25feb34a817066e.
Package revision is no longer incremented across package moves.
This has two advantages:
  - much less traffic generated on the mirror infrastructure
  - less updates for sabayon-limbo users when packages are moved to main

Bumping the revision was required by sabayon-weekly, which had the problem
that some package files were replaced during normal activity on
sabayonlinux.org and sabayon-limbo on the mirror. This generated checksum
errors, thus adding the checksum in the package file name ensures that
Entropy Server will never overwrite package file names unless the checksum
also matches.
Having a SHA1 checksum in the file name is also good for security, and
we may even want to create a SHA1 from the GPG signature in future.
Release Entropy 186
Tagging Entropy version 186