[Chapel Merge] Remove pre-release labels from version numbers

Branch: refs/heads/master
Revision: 47cb2dd
Author: bradcray
Log Message:

Merge pull request #16556 from bradcray/remove-pre-release-labels

Remove pre-release labels from version numbers

[reviewed by @mppf and @jhoole]

This is based on PR #15372.

Note that this process has changed / been simplified a bit since last
time due to the changes that were made during the introduction of
the Version module.

Modified Files:
M compiler/main/version_num.h
M doc/rst/conf.py
M doc/rst/language/archivedSpecs.rst
M doc/rst/usingchapel/QUICKSTART.rst
M doc/rst/usingchapel/chplenv.rst
M man/confchpl.rst
M man/confchpldoc.rst
M test/compflags/bradc/printstuff/versionhelp.sh

Compare: https://github.com/chapel-lang/chapel/compare/2636998dcfc0...47cb2dd24a6b