Basic support for the new TLS object functions

Doesn't wait yet, but allocates otherwise properly.  I have some tests in progress for this.

Also adds a couple bits of cleanup:
 * Notes a few unimplemented syscalls (since I was hunting for related funcs.)
 * Correctly savestates some state in sceKernelMemory.

Gods Eater Burst (according to reporting) and Sword Art Online use this, I'm not sure what else.  It seems like a recent firmware addition.

-[Unknown]