Resolve "need ubuntu22 support"

Closes #43

See merge request !20

* .gitlab-ci changes
* Needed to update detection of main() for ubuntu 22.
* fixed keystone issue where 'pushf' was being compiled to 'pushfw'
  instead of 'pushfd'

Disable building of domgraphs if domgraph option is disabled.

See merge request !19

Bsd3

See merge request !13

Update headers files to reflect BSD-3 license

Readme updates

See merge request !18

Update readme: add Docker instructions; clean-up examples; make fuzzing...

See merge request !17

Update readme: add Docker instructions; clean-up examples; make fuzzing example a separate section. 

Fix malformed link to ZAFL git repo

See merge request !16

Update README.md

See merge request !15

Script support to add p1 to the list of transforms.
This is useful in the case that a closed-source program is not compiled
with -fstack-protector.

Multiple users can conflict in /tmp/.  This avoids that issue.

Resolve "Docker setup missing from readme"

Closes #41

See merge request !14

o Update to clarify when to use docker vs. source installation. 

o Give pointer to docker setup instructions

Updates for ubuntu20

See merge request !12