Tentative fix for Issue 7270 - needless qualifiers in TypeInfo.toString

[radcapricorn]

I don't like this approach too too much, but something needs to be done, so it's a starting point. That issue is louder than it appears. If typeid(X) == typeid(Y), then it better be that typeid(X).toString() == typeid(Y).toString().
I'm open to suggestions on other approaches.
Need more tests. And feedback!

[dlang-bot]

Thanks for your pull request and interest in making D better, @radcapricorn! We are looking forward to reviewing it, and you should be hearing from a maintainer soon.
Please verify that your PR follows this checklist:

• My PR is fully covered with tests (you can see the annotated coverage diff directly on GitHub with CodeCov's browser extension
• My PR is as minimal as possible (smaller, focused PRs are easier to review than big ones)
• I have provided a detailed rationale explaining my changes
• New or modified functions have Ddoc comments (with Params: and Returns:)

Please see CONTRIBUTING.md for more information.

---

If you have addressed all reviews or aren't sure how to proceed, don't hesitate to ping us with a simple comment.

Bugzilla references

Auto-close	Bugzilla	Severity	Description
✗	7270	enhancement	Eliminate needless qualifiers in TypeInfo.toString

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 "master + druntime#2374"

[n8sh]

A possible problem with fixing 7270 is that base TypeInfo.opEquals uses string equality.

druntime/src/object.d

Lines 1060 to 1070 in e798185

	override bool opEquals(Object o)
	{
	/* TypeInfo instances are singletons, but duplicates can exist
	* across DLL's. Therefore, comparing for a name match is
	* sufficient.
	*/
	if (this is o)
	return true;
	auto ti = cast(const TypeInfo)o;
	return ti && this.toString() == ti.toString();
	}

[radcapricorn]

That's actually a requirement for fixing it :)

[thewilsonator]

This lacks tests, but otherwise LGTM

[thewilsonator]

DDOC comments

[radcapricorn]

Yup, will do.

[thewilsonator]

@radcapricorn ping