Move the 'tests' app to the new world.

src/systemcmds/tests/module.mk

@@ -0,0 +1,28 @@
+#
+# Assorted tests and the like
+#
+
+MODULE_COMMAND		 = tests
+MODULE_STACKSIZE	 = 12000
+MAXOPTIMIZATION		 = -Os
+
+SRCS			 = test_adc.c \
+			   test_bson.c \
+			   test_float.c \
+			   test_gpio.c \
+			   test_hott_telemetry.c \
+			   test_hrt.c \
+			   test_int.c \
+			   test_jig_voltages.c \
+			   test_led.c \
+			   test_sensors.c \
+			   test_servo.c \
+			   test_sleep.c \
+			   test_time.c \
+			   test_uart_baudchange.c \
+			   test_uart_console.c \
+			   test_uart_loopback.c \
+			   test_uart_send.c \
+			   tests_file.c \
+			   tests_main.c \
+			   tests_param.c