[Chapel Merge] Changing most references in our codebase from mast

Branch: refs/heads/main
Revision: 43078bd
Author: Maxrimus
Log Message:

Merge pull request #17828 from Maxrimus/m2m

Changing most references in our codebase from master to main

[reviewed by @bradcray ]

Preparing for master to main switch by changing our references in our repo from master to main

Modified Files:
M .github/CONTRIBUTING.md

M .github/ISSUE_TEMPLATE.md
M .github/workflows/CI.yml
M CHANGES.md
M doc/rst/developer/bestPractices/ContributorInfo.rst
M doc/rst/developer/bestPractices/DCO.rst
M doc/rst/developer/bestPractices/NightlyTesting.rst
M doc/rst/developer/bestPractices/git.rst
M doc/rst/developer/chips/15.rst
M doc/rst/developer/chips/inactive/10.rst
M doc/rst/developer/chips/inactive/23.rst
M doc/rst/developer/contributorAgreements/README.md
M doc/rst/platforms/macosx.rst
M doc/rst/technotes/overloadSets.rst
M doc/rst/tools/chpldoc/chpldoc.rst
M doc/rst/users-guide/index.rst
M doc/util/gen-package-list.py
M doc/util/versionButton.php
M test/classes/delete-free/lifetimes/array-borrows-owns-issue.chpl
M test/classes/initializers/generics/declarations/argument_type.future
M test/classes/initializers/generics/declarations/concrete-inits-bad.future
M test/classes/initializers/generics/declarations/concrete-inits-multiple-bad.future
M test/classes/initializers/generics/declarations/concrete-inits-multiple.future
M test/classes/initializers/generics/declarations/concrete-inits.future
M test/classes/initializers/generics/declarations/default_value.future
M test/classes/initializers/generics/declarations/no-arg-param.future
M test/classes/initializers/generics/declarations/no-arg-type.future
M test/exercises/duplicates/forStudents/README
M test/extern/passArrays/passViewToExtern.chpl
M test/studies/bale/toposort/toposort.chpl
M util/buildRelease/gen_release
M util/buildRelease/test_rpm_module.bash
M util/devel/check_paths
M util/devel/coverity/submit_build.bash
M util/devel/test/vagrant/chapelupdate.sh
M util/dockerfiles/Dockerfile
M util/dockerfiles/master/Dockerfile
M util/dockerfiles/master/gasnet/Dockerfile

Compare: https://github.com/chapel-lang/chapel/compare/528273e64a1d...43078bdb9cf6