Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.Approved by: re (implicit)Sponsored by: The FreeBSD Foundation
Move the 64-bit _setjmp to lib/libstand.
Add a version of the FreeBSD bootloader which can run in userland, packagedas a shared library. This is intended to be used by BHyVe to load FreeBSDkernels into new virtual machines.