[gentoo-soc] GSoC patch for DragonFlyBSD porting

[Naohiro Aota]

Hi all,

Here is a patch for Gentoo GSoC application.

When I was running Portage test (portage/pym/portage/tests/runTests) from
git HEAD[1] on DragonFlyBSD, I found mkdir('/') returns EPERM which
portage would not expect to get.This caused ensure_dir('/') to be failed,
so that one of the tests finished with a error. (I believe ensure_dir('/')
should not be failed in
any case ;-) )

This patch adds a workaround for this case. I've confirmed the patched
portage's "runTests" work well (give OK for all the tests) on Gentoo/Linux
(~amd64), Gentoo/FreeBSD 8.0, and DragonFlyBSD 2.4.1.

# I wonder if this SCM and repository is suited for the BSD Porting
# project[2].

[1] git://git.overlays.gentoo.org/proj/portage.git
[2]  
http://en.gentoo-wiki.com/wiki/Google_Summer_of_Code_2010_ideas#BSD_ports_of_Gentoo:_OpenBSD.2C_DragonFlyBSD.2C_etc.

Regards,
Naohiro