The scheduler's create_process now sets up the stack to iretq into a
load_process function, which will load the process image into memory
from within the process' own virtual memory space. Currently this
loading is just copying the old 'taskA' function from kernel space.
* It looks like UEFI enables SSE, so we need to tell clang -mno-sse for
now to not use XMM* until we're ready to save them.
* SYSCALL is working from ring3 tasks, calling console printf!
Return to having the bootloader re-map the kernel into the higher
half before jumping into the kernel entrypoint, so we don't have
to juggle pointers inside the kernel.
