Need updating to new syslinux-common/pxelinux packages

[Christian Reis]

Vivid will come with a new syslinux package:

  https://launchpad.net/ubuntu/+source/syslinux/3:6.03+dfsg-5

This version has a more robust networking stack and better hardware support. However, file locations have changed (for instance, /usr/lib/PXELINUX is now where the pxelinux.0 file goes, and /usr/lib/syslinux has subdirectories for bios and efi binaries), so MAAS will need to be updated to find and link them in the right place.

[Andres Rodriguez (andreserl)]

So I've done thorugh every single binary package to compare what's the difference between 3:6.03~pre18+dfsg-1ubuntu1 and 3:6.03+dfsg-5. This just seems that it won't affect MAAS at all, because it doesn't seem to be removing files that we use in favor of moving them elsewhere:

extlinux: http://paste.ubuntu.com/10279850/
isolinux: http://paste.ubuntu.com/10279852/
pxelinux: http://paste.ubuntu.com/10279855/
syslinux: http://paste.ubuntu.com/10279858/
syslinux-efi: http://paste.ubuntu.com/10279869/
syslinux-common: http://paste.ubuntu.com/10279900/