Update autogen file to check test directory for Makefiles

autogen.sh

@@ -2,7 +2,13 @@
 
 test -d ./config || mkdir ./config
 
-test -f modules/tests-sos/configure.ac || { echo "ERROR: The test directory is empty. Please run the following command to download the SOS tests:"; echo "git submodule update --init"; exit 1; }
+if [ ! -f test/Makefile.am ] || [ ! -f test/apps/Makefile.am ] ||
+     ! [ -f test/include/Makefile.am ] || [ ! -f test/performance/Makefile.am ] ||
+     ! [ -f test/shmemx/Makefile.am ] || ! [ -f test/spec-example/Makefile.am ] ||
+     ! [ -f test/unit/Makefile.am ];
+then
+  test -f modules/tests-sos/autogen.sh || { echo "ERROR: The test directory is empty. Please run the following command to download the SOS tests:"; echo "git submodule update --init"; exit 1; }
+fi
 
 FILES=./man/*.1
 echo -n "dist_man1_MANS =" > ./man/Makefile.am