elfutils: update to 0.186

elfutils: update to 0.186

Upstreamed patches (deleted):
0001-ppc_initreg.c-Incliude-asm-ptrace.h-for-pt_regs-defi.patch -
 https://sourceware.org/git/?p=elfutils.git;a=commitdiff;h=8382833a257b57b0d288be07d2d5e7af6c102869
110-no-cdefs.patch -
 https://sourceware.org/git/?p=elfutils.git;a=commitdiff;h=d390548df1942e98a1d836269a5e41ba52e121f1

Auto-refreshed:
006-Fix-build-on-aarch64-musl.patch
101-no-fts.patch

Manually updated and refreshed:
005-build_only_libs.patch
003-libintl-compatibility.patch
100-musl-compat.patch

Disabled _obstack_free check (via configure vars)

Signed-off-by: Sergey V. Lobanov <sergey@lobanov.in>