elfutils: Upgrade to v0.155

*license changed to GPLv3
*several patches were absolete so I removed them
*redhat-portability & redhat-robustify backported from
 latest elfutils-portability & elfutils-robustify from
 upstream

Signed-off-by: Radu Moisan <radu.moisan@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
elfutils-native: Fix build on distros with gcc 4.8

The patch redhat-portability.diff causes this issue
so lets revert the portion which was using %a instead of %m
thats recommended anyway, redhat patch seems to be targetting
old compilers.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
elfutils-native: Update the patch to include the missing pieces needed for tests

In the last patch we missed similar update for test/line2addr.c
which meant that the build still failed.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>