Make gcc happy, init idlen2.
Remove /usr/share/doc/psd/28.cvs/paper.ps.gz if it exists, as it is
obsolete since r251794.

PR:		191003
Submitted by:	Vick Khera
MFC after:	3 days
Use the appropriate IPv6 hashtype defines when looking up the PCBGROUP

Reviewed by:	adrian@
Use common vt_fb parts in ofwfb as far as we are able without sacrificing
performance.

MFC after:	2 weeks
Remove ia64.

This includes:
o   All directories named *ia64*
o   All files named *ia64*
o   All ia64-specific code guarded by __ia64__
o   All ia64-specific makefile logic
o   Mention of ia64 in comments and documentation

This excludes:
o   Everything under contrib/
o   Everything under crypto/
o   sys/xen/interface
o   sys/sys/elf_common.h

Discussed at: BSDcan
Implement ABORT TASK SET and I_T NEXUS RESET task management functions.

Use the last one to terminate active commands on iSCSI session termination.
Previous code was aborting only commands doing some data moves.