Remove ES_NEXT macro (#4915)

- remove all '#JERRY_ESNEXT' macro
- remove 5.1 build profile, update test runner accordingly (Note: all builtins are turn on by default)
- move tests from tests/jerry/esnext into tests/jerry, concatenate files with same names
- add skiplist to some snapshot tests that were supported only in 5.1
- fix doxygen issues that were hidden before (bc. of es.next macro)

Co-authored-by: Martin Negyokru negyokru@inf.u-szeged.hu
JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu

jerry-core/ecma/base/ecma-init-finalize.c

@@ -58,13 +58,9 @@ ecma_init (void)
   JERRY_CONTEXT (stack_base) = (uintptr_t) &sp;
 #endif /* (JERRY_STACK_LIMIT != 0) */
 
-#if JERRY_ESNEXT
   ecma_job_queue_init ();
-#endif /* JERRY_ESNEXT */
 
-#if JERRY_ESNEXT
   JERRY_CONTEXT (current_new_target_p) = NULL;
-#endif /* JERRY_ESNEXT */
 
 #if JERRY_BUILTIN_TYPEDARRAY
   JERRY_CONTEXT (arraybuffer_compact_allocation_limit) = 256;
@@ -77,9 +73,7 @@ ecma_init (void)
 void
 ecma_finalize (void)
 {
-#if JERRY_ESNEXT
   JERRY_ASSERT (JERRY_CONTEXT (current_new_target_p) == NULL);
-#endif /* JERRY_ESNEXT */
 
   ecma_finalize_global_environment ();
   uint8_t runs = 0;
@@ -93,7 +87,6 @@ ecma_finalize (void)
     }
   } while (JERRY_CONTEXT (ecma_gc_new_objects) != 0);
 
-#if JERRY_ESNEXT
   jmem_cpointer_t *global_symbols_cp = JERRY_CONTEXT (global_symbols_cp);
 
   for (uint32_t i = 0; i < ECMA_BUILTIN_GLOBAL_SYMBOL_COUNT; i++)
@@ -103,7 +96,6 @@ ecma_finalize (void)
       ecma_deref_ecma_string (ECMA_GET_NON_NULL_POINTER (ecma_string_t, global_symbols_cp[i]));
     }
   }
-#endif /* JERRY_ESNEXT */
 
   ecma_finalize_lit_storage ();
 } /* ecma_finalize */