[Bug libstdc++/69879] Create a pointer to the default operator new and delete

[daniel.gutson at tallertechnologies dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69879

--- Comment #1 from Daniel Gutson <daniel.gutson at tallertechnologies dot com> 
---
Remind to consider all the overloads (throwing, nothrow, etc.) which will
require different names.