[Regression] max_size() does not take the allocator's max_size() into account

[alexkaratarakis]

Boost >=1.69 implementation of max_size() calls this function which does NOT take into account the maximum size of the allocator.

Boost <= 1.68 implementation of max_size() was calling this function from boost::container which does take into account the maximum size of the allocator.

The relevant commit is ca3d667 @glenfe

As a result, when using a custom allocator with limited size MY_MAX_SIZE, previous calls to max_size() would return MY_MAX_SIZE, but they will now return (std::numeric_limits<size_type>::max)() / sizeof(value_type)

[glenfe]

I'll take care of it for Boost 1.72

[glenfe]

@alexkaratarakis 7be41ca should address this. We're almost ready to ship 1.71, so the earliest it will be released is 1.72.

[alexkaratarakis]

Thanks for the swift response and fix!