Pass the "good random" flag from the bootblocks to the kernel when applicable.

change marks[] array to uint64_t, so the code can track full 64-bit
details from the ELF header instead of faking it.
Proposal from mlarkin, tested on most architectures already

Nuke some obvious #include duplications.

ok espie@ deraadt@ millert@ tedu@

Minor reliability fixes:
- clear initrd signature before returning to PMON or to the loaded kernel
- fail /etc/boot.conf access when loading from an initrd image, instead of
letting it point to the

Minor reliability fixes:
- clear initrd signature before returning to PMON or to the loaded kernel
- fail /etc/boot.conf access when loading from an initrd image, instead of
letting it point to the beginning of the kernel image and have the code
complain of lines being too long.
Bump minor version.

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Work in progress standalone boot blocks for OpenBSD/loongson systems. Will
load a kernel from the OpenBSD partition, with symbols.
However:
- does not work on gdium (usb i/o errors)
- no countdown du

Work in progress standalone boot blocks for OpenBSD/loongson systems. Will
load a kernel from the OpenBSD partition, with symbols.
However:
- does not work on gdium (usb i/o errors)
- no countdown due to PMON limitations, so either `bsd' in the PMON
environment contains a kernel filename to load, and it will get loaded
immediately, or it doesn't (e.g. the variable does no exist) and you get
a prompt and can pass options to the kernel. Note that /etc/boot.conf
commands can still be used in both cases.
- does not work for me when loaded automatically from PMON (put in the `al'
environment variable). However, `boot $al' works fine. Need to investigate.

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