Update most from pre5.1-20-1 to pre5.1-21

Add pre-built binaries

Update buildessential to add new dependencies

Comment buildessential dependencies

Add new packages to core_packages.txt

Add missing core packages

Update sed from 4.1.5 to 4.5

Update libunistring from 0.9.9 to 0.9.10

Update bison from 3.0.4-1 to 3.0.5

Update binutils from 2.30-0 to 2.31.1

Update bind from 9.12.1-p2 to 9.12.2

Update libxml2 from 2.9.8-1 to 2.9.8-2

Add pre-built binaries

Add pre-built binaries

Add pre-built binaries

Add pre-built binaries

Add dependencies

Add pre-built binaries

Add pre-built binaries

Add sed package

Add pre-built binaries

* Added Slack link to README.

* Updated Slack link and added image.

* Update README.md

* Add files via upload

* Update README.md

* Delete slack.svg

Update libunbound from 1.7.0 to 1.7.3

Add pre-built binaries

Update icu4c from 60.1 to 62.1

Add pre-built binaries

Fixes issue where no all target in po
Fixes issue where 1.19.0.5 branch does not check out

Update urls in packages.yaml

Update packages.yaml in tools

Update activity m-q

Update activity r-z

Change urls and activity status

Update urls

Update check_updates.sh

Update readline from 6.3p8 to 6.3p8-1

Symlink libhistory.so

Add pre-built binaries

* Patched readline to use the system library.

* Bumped version number

* Added line to track symlink.

* Changed source URL

* Linked all readline libraries

* Removed precompiled binaries

* Added readline prefix

Update readline dependency in lua.rb

Add autosetup package

Add fossil package

Update sqlite from 3.22.0 to 3.24.0

Add pre-built binaries

Add pre-built binaries