[Simon, can you please commit missing callvec.c in pmax/stand/lib?]

This uvm_km_suballoc() panic in machdep.c is back again for me (with a
fresh source tree) when allocating exec_map.

	minaddr is 0xffffffff (doesn't matter)
	maxaddr is 0xffffffff (doesn't matter)
	kernel_map is nonzero
	size is 4194304			

Any ideas? I'll recompile with the UVMHIST stuff tomorrow. BTW, tried
linking a MIPS kernel that uses any of the bswap() functions lately?

Andy.