These binary packages represent builds of the mainline or stable Linux kernel tree at the commit below:
v3.2.50 (401390fbc8e28bb07851be6bbe0b343a0e9f8306)
To obtain the source from which they are built fetch the commit below:
git://git.launchpad.net/~ubuntu-kernel-test/ubuntu/+source/linux/+git/mainline-crack v3.2.50
and apply the following patches on top in the order below:
0001-base-packaging.patch
0002-UBUNTU-SAUCE-highbank-export-clock-functions-for-mod.patch
0003-debian-changelog.patch
0004-configs-based-on-Ubuntu-3.2.0-52.78.patch
This is summarised in the SOURCES file included with these binaries.
For further information see: http://wiki.ubuntu.com/Kernel/MainlineBuilds