Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

- Write the ISO9660 descriptor after the apm partition entries.
- Fill the needed pmPartStatus flags. At least the OpenBIOS
implementation relies on these flags.

This commit fixes the panic seen on OS-X when inserting a FreeBSD/ppc disc.
Additionally OpenBIOS recognizes the partition where the boot code is located.
This lets us load a FreeBSD/ppc PowerMac kernel inside qemu.

PR: powerpc/162091
MFC after: 1 week

Spelling fixes for usr.sbin/

Sync makefs(8) ISO 9660 support with NetBSD:
o cd9960 -> cd9660
o Move inclusion of sys/endian.h from cd9660_eltorito.c to cd9660.h
since actual user is not cd9660_eltorito.c but iso.h and
cd9660_eltorito.h.

Actually, include order/place of sys/endian.h doesn't matter on
netbsd since it is always included by sys/types.h but it's not
true on other system. This should fix cross build breakage on
freebsd introduced by rev. 1.16 of cd9660_eltorito.c.
Problem reported and fix suggested on twitter.
o Fix fd leaks in error cases. Found by cppcheck.
o RRIP RE length should be 4, not 0
o Apply fixes for PR bin/44114 (makefs(8) -t cd9660 -o rockridge creates
corrupted cd9660fs), iso9660_rrip.c part:
- cd9660_rrip_finalize_node() should check rr_real_parent in node->parent,
not in node itself in RRIP_PL case
- cd9660_rrip_initialize_node() should update only node passed as arg
so handle RRIP_PL in DOTDOT case

Fixes malformed dotdot entries in deep (more than 8 level) directories
moved into .rr_moved dir.

Should be pulled up to netbsd-5.
(no official ISO has such deep dirs, but cobalt restorecd is affected)

Reviewed by: mm
Approved by: re (kib)
Obtained from: NetBSD
MFC after: 3 days

Add analogs to the -chrp-boot and -prep-boot options to mkisofs.

Simplify this code somewhat by only writing a 512-byte-sector APM map.
All firmwares can read it, we need to write one anyway for old OF
versions, and if a 512-byte one is present, OS X ignores the 2048-byte one
in favor of it.

Fix boot on old machines (e.g. blue and white G3s) by synthesizing a
512-byte sector map instead unused space in the first 2048-byte sector.

Add support for synthesizing an APM partition map to map Mac PowerPC
bootstrap partitions from the ISO9660 boot catalog. This preserves OS X's
ability to mount the CD, while allowing us a way to provide HFS-ified
bootstrap code for Open Firmware.

Sync with the latest version from NetBSD. It notably addds ISO9660 support.

Submitted by: bapt