Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

Implement functions necessary for compiling fbsd-threads.c.

Reviewed by: marcel
Approved by: re (kib)
MFC after: 1 week

This commit was generated by cvs2svn to compensate for changes in r131082,
which included commits to RCS files with non-trunk default branches.

Add support for ia64. This code will be contributed to GDB as soon
as the legal prerequisites are met. To avoid future merge conflicts,
this is added to the vendor branch. The changes are seperately kept
in FREEBSD-diffs for easy reference.