downgrade require automake version
Change-Id: Ia6b9567a4e463af11c00270445ad84fdffd90c93
# Automake 1.15 and gnulib don't get along: gnulib has some strange error
# in the way it handles getloadavg.c which causes make distcheck to fail.
# http://lists.gnu.org/archive/html/bug-gnulib/2018-06/msg00024.html
-AM_INIT_AUTOMAKE([1.16.1 foreign -Werror -Wall])
+AM_INIT_AUTOMAKE([1.15.1 foreign -Werror -Wall])
# Checks for programs.
AC_USE_SYSTEM_EXTENSIONS