This reverts commit be7d8cfaf1d303cc460ec32207b6f05cd0f86293.
This commit missed some previous copyrights mentioned,
in general I think its better to have this per-file to
follow who wrote what and when.
The list of required external deps is now confuse, libarchive and openssl.
libxbps now includes a wrapper for proplib prefixed with xbps_ rather than prop_.
