Update to 1.13.99.2

Changes from 1.13.99.1 to 1.13.99.2

• Fix pkg fetch -o
• Implement a mechanism to autobackup libraries during upgrades (off by default)
• zsh-completion: disable repo update durign package retrival
• Improve documentation
• More variable are now expanded when reading the confirations files:
  • OSNAME: FreeBSD
  • RELEASE: 12.1
  • ARCH: amd64
  • VERSION_MAJOR (FreeBSD only)
  • VERSION_MINOR (FreeBSD only)
• Remove the unused and inconsistent pkg create -n
• Add -t timestamp to pkg create to be able to specify the expected file timestamp via command line.
• Refactor the pkg_create API and mark as deprecated the old functions