Format all sources with Uncrustify

Formatted all sources and manually tuned some files to make the code look
neater.

server/modules/authenticator/MySQLAuth/dbusers.cc

@@ -788,7 +788,7 @@ bool check_service_permissions(SERVICE* service)
 {
     if (rcap_type_required(service_get_capabilities(service), RCAP_TYPE_NO_AUTH)
         || config_get_global_options()->skip_permission_checks
-        || service->dbref == NULL)  // No servers to check
+        || service->dbref == NULL)      // No servers to check
     {
         return true;
     }

server/modules/authenticator/MySQLAuth/mysql_auth.cc

@@ -110,7 +110,9 @@ extern "C"
             NULL,   /* Process finish. */
             NULL,   /* Thread init. */
             NULL,   /* Thread finish. */
-            {{MXS_END_MODULE_PARAMS}}
+            {
+                {MXS_END_MODULE_PARAMS}
+            }
         };
 
         return &info;