Changes to fix ABI/API breakage across lum/lbm and kernel source

• Kernel patch: http://paste.ubuntu-nl.org/57332/

• lum should Build-Conflicts with lbm headers

• lum and lbm should provide headers in /lib/modules/uname -r/ubuntu-headers-{lbm,lum}

• headers package are flavour specific
• Need meta packages for these headers
• v4l drivers that require alsa should be copied to lum
• CONFIG_SND should be disabled in kernel
• Use missing module list to cross check modules that need to be moved to lum

Implementation Notes

• The headers packages are actually installed in /usr/src/linux-headers-lum-PKGVER-ABINUM-FLAVOUR which is consistent with kernel headers.