modules: remove error message from dlsym() when a module is loaded

Summary:
dlsym() could print error message when it tried to load
a nonexistent symbol. Whenever eina_module_load is called,
it checks __eina_module_init symbol. Even if there is no
symbol for init, module loading could be done well.
But, it will print an error message. So, we need to use
EINA_MODULE_INIT, EINA_MODULE_SHUTDOWN in every modules
for removing error messages.

Test Plan: N/A

Reviewers: woohyun, raster, Hermet, seoz, cedric

Reviewed By: cedric

Differential Revision: https://phab.enlightenment.org/D3805

Signed-off-by: Cedric Bail <cedric@osg.samsung.com>

legacy/elementary/src/modules/access_output/mod.c

@@ -121,3 +121,17 @@ out_done_callback_set(void (*func) (void *data), const void *data)
    cb_func = func;
    cb_data = (void *)data;
 }
+
+static Eina_Bool
+_module_init(void)
+{
+   return EINA_TRUE;
+}
+
+static void
+_module_shutdown(void)
+{
+}
+
+EINA_MODULE_INIT(_module_init);
+EINA_MODULE_SHUTDOWN(_module_shutdown);

legacy/elementary/src/modules/datetime_input_ctxpopup/datetime_input_ctxpopup.c

@@ -382,3 +382,17 @@ elm_modapi_shutdown(void *m EINA_UNUSED)
 {
    return 1; // succeed always
 }
+
+static Eina_Bool
+_module_init(void)
+{
+   return EINA_TRUE;
+}
+
+static void
+_module_shutdown(void)
+{
+}
+
+EINA_MODULE_INIT(_module_init);
+EINA_MODULE_SHUTDOWN(_module_shutdown);

legacy/elementary/src/modules/test_entry/mod.c

@@ -35,3 +35,17 @@ obj_longpress(Evas_Object *obj)
 {
    printf("longpress: %p\n", obj);
 }
+
+static Eina_Bool
+_module_init(void)
+{
+   return EINA_TRUE;
+}
+
+static void
+_module_shutdown(void)
+{
+}
+
+EINA_MODULE_INIT(_module_init);
+EINA_MODULE_SHUTDOWN(_module_shutdown);