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/operations/ecma-lex-env.h

@@ -35,9 +35,7 @@ void ecma_init_global_environment (void);
 void ecma_finalize_global_environment (void);
 ecma_object_t *ecma_get_global_environment (ecma_object_t *global_object_p);
 ecma_object_t *ecma_get_global_scope (ecma_object_t *global_object_p);
-#if JERRY_ESNEXT
 void ecma_create_global_lexical_block (ecma_object_t *global_object_p);
-#endif /* JERRY_ESNEXT */
 ecma_value_t ecma_op_raise_set_binding_error (ecma_property_t *property_p, bool is_strict);
 
 #if JERRY_MODULE_SYSTEM
@@ -70,7 +68,6 @@ ecma_value_t ecma_op_implicit_this_value (ecma_object_t *lex_env_p);
 /* ECMA-262 v5, Table 18. Additional methods of Declarative Environment Records */
 void ecma_op_create_immutable_binding (ecma_object_t *lex_env_p, ecma_string_t *name_p, ecma_value_t value);
 
-#if JERRY_ESNEXT
 void ecma_op_initialize_binding (ecma_object_t *lex_env_p, ecma_string_t *name_p, ecma_value_t value);
 
 void ecma_op_create_environment_record (ecma_object_t *lex_env_p, ecma_value_t this_binding, ecma_object_t *func_obj_p);
@@ -79,7 +76,6 @@ ecma_environment_record_t *ecma_op_get_environment_record (ecma_object_t *lex_en
 bool ecma_op_this_binding_is_initialized (ecma_environment_record_t *environment_record_p);
 void ecma_op_bind_this_value (ecma_environment_record_t *environment_record_p, ecma_value_t this_binding);
 ecma_value_t ecma_op_get_this_binding (ecma_object_t *lex_env_p);
-#endif /* JERRY_ESNEXT */
 
 /**
  * @}