Update to 1.12.99.1

• When installing a file over a file that is not tracked by any package, save the previous one as .pkgsave
• Fix a chicken/egg problem with the meta being compressed and defining the compression format. Now pkg repo will create a meta.conf file uncompressed (it is small enough) and fallback on the old meta.txz. Note that meta.txz is still created for backward compatibility
• pkg repo now creates meta files in version 2 by default meaning the digests.txz is not created anymore, it was only used up to pkg 1.2. anyone upgrading from pkg 1.2 should first run pkg bootstrap -f to be on a recent version.
• pkg -r now first lookup under the rootdir for its ABI_FILE.
• suppress version checking when -j is specified
• Alphabetically sort packages printed in the output of pkg commands to ease readability
• pkg lock/unlock now allows multiple packages in arguments