build: don't let libtool insert rpath into binaries

configure.ac

@@ -717,3 +717,14 @@ AC_CONFIG_FILES([Makefile src/Makefile share/setup.nsi share/qt/Info.plist])
 AC_CONFIG_FILES([qa/pull-tester/run-bitcoind-for-test.sh],[chmod +x qa/pull-tester/run-bitcoind-for-test.sh])
 AC_CONFIG_FILES([qa/pull-tester/build-tests.sh],[chmod +x qa/pull-tester/build-tests.sh])
 AC_OUTPUT
+
+dnl Taken from https://wiki.debian.org/RpathIssue
+case $host in
+   *-*-linux-gnu)
+     AC_MSG_RESULT([Fixing libtool for -rpath problems.])
+     sed < libtool > libtool-2 \
+     's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" -D__LIBTOOL_IS_A_FOOL__ "/'
+     mv libtool-2 libtool
+     chmod 755 libtool
+   ;;
+esac