Simplify test since all the lines were the same.

testsuite/expect/test7.17

@@ -41,16 +41,10 @@ print_header $test_id
 #
 file delete $test_prog
 
-if {[test_aix]} {
-	send_user "$bin_cc ${test_prog}.c -g -pthread -export-dynamic -o ${test_prog} -I${src_dir} -I${build_dir} ${build_dir}/src/api/libslurm.o -ldl\n"
-	exec       $bin_cc ${test_prog}.c -g -pthread -export-dynamic -o ${test_prog} -I${src_dir} -I${build_dir} ${build_dir}/src/api/libslurm.o -ldl
-} elseif [file exists ${slurm_dir}/lib64/libslurm.so] {
-	send_user "$bin_cc ${test_prog}.c -g -pthread -export-dynamic -o ${test_prog} -I${src_dir} -I${build_dir} ${build_dir}/src/api/libslurm.o -ldl -lz\n"
-	exec       $bin_cc ${test_prog}.c -g -pthread -export-dynamic -o ${test_prog} -I${src_dir} -I${build_dir} ${build_dir}/src/api/libslurm.o -ldl -lz
-} else {
-	send_user "$bin_cc ${test_prog}.c -g -pthread -export-dynamic -o ${test_prog} -I${src_dir} -I${build_dir} ${build_dir}/src/api/libslurm.o -ldl -lz\n"
-	exec       $bin_cc ${test_prog}.c -g -pthread -export-dynamic -o ${test_prog} -I${src_dir} -I${build_dir} ${build_dir}/src/api/libslurm.o -ldl -lz
-}
+set cmd "$bin_cc ${test_prog}.c -g -pthread -export-dynamic -o ${test_prog} -I${src_dir} -I${build_dir} ${build_dir}/src/api/libslurm.o -ldl"
+send_user "$cmd\n"
+eval exec $cmd
+
 exec $bin_chmod 700 $test_prog
 
 send_user "\n====test7.17.1====\n"