Prepare for 0.175

Set version to 0.175
Update NEWS and elfutils.spec.in.
Regenerate po/*.po files.

Signed-off-by: Mark Wielaard <mark@klomp.org>
diff --git a/configure.ac b/configure.ac
index da9f8cb..b89b867 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,7 +17,7 @@
 dnl
 dnl  You should have received a copy of the GNU General Public License
 dnl  along with this program.  If not, see <http://www.gnu.org/licenses/>.
-AC_INIT([elfutils],[0.174],[https://sourceware.org/bugzilla],[elfutils],[http://elfutils.org/])
+AC_INIT([elfutils],[0.175],[https://sourceware.org/bugzilla],[elfutils],[http://elfutils.org/])
 
 dnl Workaround for older autoconf < 2.64
 m4_ifndef([AC_PACKAGE_URL],