Fix unused parameter related build issues on Windows (#3003)

MSVC doen't support __attribute__((unused)),
we should use JERRY_UNUSED macro instead.

Additionally removed the internal jrt.h include from
tests/unit-core/test-common.h which was layering violation.
It made JERRY_ASSERT unavailable, we should use TEST_ASSERT.

JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác oszi@inf.u-szeged.hu

tests/unit-core/test-common.h

@@ -16,7 +16,7 @@
 #ifndef TEST_COMMON_H
 #define TEST_COMMON_H
 
-#include "jrt.h"
+#include "jerryscript-port.h"
 
 #include <math.h>
 #include <setjmp.h>
@@ -25,6 +25,8 @@
 #include <stdarg.h>
 #include <string.h>
 
+#define JERRY_UNUSED(x) ((void) (x))
+
 #define TEST_ASSERT(x) \
   do \
   { \
@@ -36,7 +38,7 @@
                       __FILE__, \
                       __func__, \
                       (unsigned long) __LINE__); \
-      jerry_fatal (ERR_FAILED_INTERNAL_ASSERTION); \
+      jerry_port_fatal (ERR_FAILED_INTERNAL_ASSERTION); \
     } \
   } while (0)