thread id width

[Fabian Cenedese]

Hi

Some MI commands work with a 16bit hex encoded thread id (e.g. qC).
But then there's also qPmodethreadid where threadid is a 64bit value. And
some commands don't mention the size at all (vCont, TXX).

Is the limitation to 16bit still mandatory? Are there places in gdb that can't
cope with bigger ids? If so, why does the qP work with 64bit? For being
future-save?

Thanks

bye  Fabi