* Implemented udi_cb_alloc().
  ^ Core functionality is split off into lzudi::udi_cb_alloc_sync.
  ^ This enables the kernel's libzudi to allocate CBs without having to do an
    async fake call.
* New layout scanning and inline pointer setup methods:
  * fplainn::sChannelMsg::getTotalCbInlineRequirements() [Untested].
  * fplainn::sChannelMsg::initializeCbInlinePointers() [Untested].
  ^ Used by udi_cb_alloc*().
* New memory allocation header type for control blocks: fplainn::sControlBlock.