Enhance test for finding related easyconfigs and fix it

[Flamefire]

The matching of "related" easyconfigs isn't specified clearly enough:

easybuild-framework/easybuild/framework/easyconfig/tools.py

Lines 452 to 460 in f4e855b

	The following criteria are considered (in this order) next to common software version criterion, i.e.
	exact version match, a major/minor version match, a major version match, or no version match (in that order).
	(i) matching versionsuffix and toolchain name/version
	(ii) matching versionsuffix and toolchain name (any toolchain version)
	(iii) matching versionsuffix (any toolchain name/version)
	(iv) matching toolchain name/version (any versionsuffix)
	(v) matching toolchain name (any versionsuffix, toolchain version)
	(vi) no extra requirements (any versionsuffix, toolchain name/version)

This leaves open the question whether the toolchain or the software version takes precedence.

I made a test searching for toy-1.2.3-GCC-12 in ['toy-1.2-GCC-12.eb', 'toy-1-GCC-12.eb', 'toy-4-GCC-12.eb', 'toy-1.2.3-GCC-11.eb', 'toy-1.2-GCC-11.eb', 'toy-1-GCC-11.eb', 'toy-4-GCC-11.eb', 'toy-1.2.3-Clang-12.eb', 'toy-1.2-Clang-12.eb', 'toy-1-Clang-12.eb', 'toy-4-Clang-12.eb']

Should this return toy-1.2-GCC-12.eb or toy-1.2.3-GCC-11.eb? I.e. is the toolchain more important or the version?

This should be clarified in the docstring.

Currently I guess the software version is considered more than the toolchain version. But is this really what we want?
Or should we rather compare 1.2.3 against 1.2 in the same toolchain?

Edit:
The above seems to be incomplete: Currently we were NOT finding '1.2' when searching for '1.2.3' but DID find '1.2.4' . I.e. the current search requires all version components.

I changed the regex to match either another version component or NOT a dot so 1.2 and 1.2.x are both matched for 1.2.y (with x!=y)