LWG 4260 Query objects must be default constructible

[JeffGarland]

Priority 2 issue

https://cplusplus.github.io/LWG/lwg-active.html#4260

[crtrott]

LWG discussed this and this needs other words which Tim will provide.

[bstamour]

Poll: Accept the resolution of 4260 and move to immediate.

|F|A|N|
|12|0|0|