Consider `-` as a separator in module version specification

[xdelaruelle]

Implicit version specification may currently feel a bit awkward with modules produced by Spack:

$ module load python/3.12
$ module list
Currently Loaded Modulefiles:
 1) python/3.12.12-mwiwd7s

Key:
default-version
$ module purge
$ module load python/3.12.12
ERROR: Unable to locate a modulefile for 'python/3.12.12'

The - character is not considered as a separator within the version specification.

Adding this character as a separator like . will help the Spack users to get the implicit version specification working well with their generated modules.

[xdelaruelle]

A solution may also to have a new configuration option to define the list of character that should be considered as separator for version specification.