buildroot

libselinux: bump version to 2.6

This commit also adds a patch that allows libselinux 2.6 to build
properly with older compilers such as gcc 4.4.

Signed-off-by: Adam Duskett <aduskett@codeblue.com>
[Thomas: add patch to fix gcc 4.4 build issue.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>