Revert "Merge pull request #92 from shoo/fix7020"

[MartinNowak]

This fixes Issue 7375.
It reverts typeinfo name comparison introduced with #92. This fails as the name of the base class is mod.Base!(i) not mod.Base!(22).

See Issue 7020 for further reasons why this has been the wrong fix in the first place.

[WalterBright]

The compiler shouldn't have used the same name for the different instantiations. That fixes the immediate problem, but whether throwing exceptions across DLL boundaries by checking the name strings is a good idea or not is still open to question.

[MartinNowak]

Exceptions are only a small part of the problem that arise when having multiple runtimes in one process.
Think of stdio Files that use different locks. Adding string comparison was as wrong as adding the GC proxy.
Both are hacky workarounds for breaking the ODR but none of them helps us to make phobos a DLL.

[alexrp]

What's the status of this pull request? The Bugzilla issue is marked as fixed.

[MartinNowak]

In an attempt to fix a symptom of ODR violation #92 introduced class name comparison in _d_isbaseof2.
This is both slow and wrong. Slow because it adds many string comparisons.
Wrong because having the same type name doesn't imply type equivalence, e.g. different versions of a class coexisting in a process (when hotswapping instances) are part of different type hierarchies.
There is more trivia in Bugzilla 7020.