[test] Simplify test runner
Always pass hb-shape as first argument to run-tests.py.
Also require automake 1.13.
diff --git a/configure.ac b/configure.ac
index 18bfe2a..3b68264 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,8 +9,7 @@
AC_CONFIG_SRCDIR([src/harfbuzz.pc.in])
AC_CONFIG_HEADERS([config.h])
-AM_INIT_AUTOMAKE([1.11.1 gnits tar-ustar dist-bzip2 no-dist-gzip -Wall no-define color-tests -Wno-portability])
-AM_CONDITIONAL(AUTOMAKE_OLDER_THAN_1_13, test $am__api_version = 1.11 -o $am__api_version = 1.12)
+AM_INIT_AUTOMAKE([1.13.0 gnits tar-ustar dist-bzip2 no-dist-gzip -Wall no-define color-tests -Wno-portability])
AM_SILENT_RULES([yes])
# Initialize libtool
