Log Message:
Update xen 3.0 packages to 3.0.4.
pksgrc changes: install man pages for xm, xend-config.sxp and xmdomain.cfg.
Should fix pkg/36190.

Main changes:
This is largely an opportunistic stabilising release for HVM guests, due to
the large amount of work in that area of the code since 3.0.3. These
enhancements have in particular improved support for SMP and ACPI Linux and
Windows operating systems.