Ben Boeckel authored May 04, 2017 and Brad King committed May 04, 2017

None of these usages of `std::list` were inserting or removing elements
in the middle of the structure, so there were no benefits to using it.

Other uses were related to C pointers being stable in a list of strings
whereas in a vector of strings, small pointer optimizations could be
moved and become invalid after a modification to the hosting vector.
None of these uses modified the vector after handing out a C string to
an external store.