It's not part of the standard and MSVC doesn't like it.  It makes the code
a lot less elegant than it used to be, but I think it should work now.

Apparetly in C++, inline means a totally different thing.

This reverts commit c939f6aff405ca7b10b1f1538f46148bff719fcb.

Also use a common pool for all nul-content ones.