package/libsepol: fix -fno-common build faiures

Add upstream patch for
    libsepol: remove leftovers of cil_mem_error_handler
    libsepol: fix CIL_KEY_* build errors with -fno-common

Fixes:
http://autobuild.buildroot.net/results/3d133ce6e83833f0c70a91270d0c49304c3413f6/



Cc: Romain Naour <romain.naour@gmail.com>
Cc: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Tested-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>