[Bug libstdc++/106852] Implement C++23 P2465R3 Standard Library Modules std and std.compat

[nshead at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106852
Bug 106852 depends on bug 114867, which changed state.

Bug 114867 Summary: [modules] name lookup issues when a function overload set 
is exported from GMF
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114867

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED