Fix issue 19162 - [REG: 2.079.0] Public Import Overlapping Names Conflict Resolution

[ghost]

This shouldn't have been committed to begin with until after the actual issue had been fixed. A breaking change which allows abs() to be instigated for all types irregardless if they have comparison and negative operators.

@wilzbach Per your commit.

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Bugzilla references

Auto-close	Bugzilla	Severity	Description
✗	18051	enhancement	missing enum support in formattedRead/unformatValue
✓	19162	regression	[REG: 2.079.0] Public Import Overlapping Names Conflict Resolution

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub fetch digger
dub run digger -- build "stable + phobos#6664"

[wilzbach]

Urgh. I don't why this found its way into mainline. Sorry!
For a speedy merge, I added a test based on your issue and also fixed the order of the constraints to avoid the integral promotion message (maybe that was the initial motivation?)

[wilzbach]

Argh it looks like https://issues.dlang.org/show_bug.cgi?id=18250 and https://issues.dlang.org/show_bug.cgi?id=18251 are still in effect:

std/math.d(629): Deprecation: use of imaginary type `ireal` is deprecated, use `real` instead
std/math.d(629): Deprecation: use of imaginary type `ireal` is deprecated, use `real` instead
std/math.d(629): Deprecation: use of imaginary type `ireal` is deprecated, use `real` instead
std/math.d(629): Deprecation: use of imaginary type `ireal` is deprecated, use `real` instead

[wilzbach]

I pushed another commit with the TestComplex workaround (the same was used for e.g. std.format) - a972e26#diff-e28dc7a93ec122fed96f51899af668a0R2608

[wilzbach]

Rebased this onto stable, s.t. we still can get it in for 2.082.
@ others: what do you think about the version(TestComplex) workaround?
It does fix this issue and we have done it for std.format too as it looks like it's the only solution for the complex type deprecation we have at the moment :/

[PetarKirov]

LGTM. Thanks for working on this issue @look-at-me and @wilzbach!