elfutils: bump to 0.173

- Removed hacks to use standalone argp as upstream now detects it nicely.
- As we are already installing files, use files from PKG_INSTALL_DIR and
  not PKG_BUILD_DIR
- Only changes Makefile.am as PKG_FIXUP:=autoreconf is in use

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>

package/libs/elfutils/patches/005-build_only_libs.patch

@@ -1,15 +1,3 @@
---- a/Makefile.in
-+++ b/Makefile.in
-@@ -377,8 +377,7 @@ AM_MAKEFLAGS = --no-print-directory
- pkginclude_HEADERS = version.h
- 
- # Add doc back when we have some real content.
--SUBDIRS = config m4 lib libelf libebl libdwelf libdwfl libdw libcpu libasm \
--	  backends src po tests
-+SUBDIRS = config m4 lib libelf libebl libdwelf libdwfl libdw libasm
- 
- EXTRA_DIST = elfutils.spec GPG-KEY NOTES CONTRIBUTING \
- 	     COPYING COPYING-GPLV2 COPYING-LGPLV3
 --- a/Makefile.am
 +++ b/Makefile.am
 @@ -27,8 +27,7 @@ AM_MAKEFLAGS = --no-print-directory