Fix rquery -e

Issue:	#910
Fix install progress output for meta packages

Issue:	#909
Fix writing annotations to manifests

Issue:	#925
pkg-clean: Show files to delete first

Issue:	#887
Move pkg_symlink_cksum prototype to more proper header
Add a pkg_symlink_cksumat to fix pkg-delete

Issue:	#913
Turn off broken incremental update for now.

We now have no stable builds and using of manifestdigest was wrong
in terms of repository update. For now, turn off incremental logic and always
update the full remote repo.
Add another useful example: unmaintained packages

In times before pkg(8) you had to jump through loops to get a list of
unmaintained packages on your system.
Merge pull request #930 from blabber/master

Add another useful example: unmaintained packages
Fix spelling.

Update last-modified date.
Add packages checksums to digest file.
Use checksums for repo update.
Fix processing by striping trailing \n.
Fix pkg-ssh.

Passed fd is a descriptor of opened directory. Therefore, we skip all
further checks and just use openat/fstatat. This might be insecure if
capsicum is not enabled.
Fix some issues with pkg-ssh parsing.
Revert "Fix pkg-ssh."

This reverts commit 855159cdd43d50543cf0c6365ea8ea5f825aad45.
Restore the fix partially.