cherry-pick changesets from master to support SL6
pcucontrol-SVNPATH := http://svn.planet-lab.org/svn/pcucontrol/tags/pcucontrol-1.0-2/
nodeconfig-GITPATH := git://git.planet-lab.org/nodeconfig.git@nodeconfig-4.3-8
bootmanager-BRANCH := 4.3
-bootmanager-GITPATH := git://git.planet-lab.org/bootmanager@bootmanager-4.3-22
+bootmanager-GITPATH := git://git.planet-lab.org/bootmanager@bootmanager-4.3-23
pypcilib-GITPATH := git://git.planet-lab.org/pypcilib.git@pypcilib-0.2-10
bootcd-GITPATH := git://git.planet-lab.org/bootcd.git@bootcd-4.2-23
vserver-reference-GITPATH := git://git.planet-lab.org/vserver-reference@vserver-reference-4.2-18