ports-mgmt/pkg-devel: update to 2.4.99.1

Changes:

• fetch: improve error reporting
• fetch: properly integrate the curl debug informations in the pkg debug output
• fetch: display curl IP address we are fetching from in debug mode
• unregister(8): new command to remove the records from an installed package, keeping the files around
• install --register-only: records the packages as installed without touching any installed files on the filesystem. Note in case on config files it also the vanilla version of the file in the db so 3way merge is functional for later upgrades
• case sensitivity: lots of bug fixes, the behaviour is now consistent accross all commands and respect the default setting in pkg.conf.