[Chapel Merge] Version module simplification: one type rather tha

Branch: refs/heads/master
Revision: cdbec1a
Author: bradcray
Log Message:

Merge pull request #16486 from bradcray/simplifyVersion

Version module simplification: one type rather than two

[reviewed by @ronawho]

This is an attempt to simplify the Version module by unifying down to a single type with empty or non-empty commit values rather than distinguishing these using two types (a semantic version vs. a source version) as we had before.

For the most part, this was a simple change, where the biggest effort was rewriting the docs. I also reworded the error message slightly to reflect not having to distinguish between different representations of versions.

Modified Files:
M modules/standard/Version.chpl
M test/library/standard/Version/compareChplVersionErrors.good

Compare: https://github.com/chapel-lang/chapel/compare/a328e979b8ef...cdbec1aacd3f