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/vm/vm-stack.h

@@ -68,12 +68,9 @@ typedef enum
   VM_CONTEXT_FINALLY_RETURN, /**< finally context with a return */
   VM_CONTEXT_TRY, /**< try context */
   VM_CONTEXT_CATCH, /**< catch context */
-#if JERRY_ESNEXT
   VM_CONTEXT_BLOCK, /**< block context */
-#endif /* JERRY_ESNEXT */
   VM_CONTEXT_WITH, /**< with context */
   VM_CONTEXT_FOR_IN, /**< for-in context */
-#if JERRY_ESNEXT
   VM_CONTEXT_FOR_OF, /**< for-of context */
   VM_CONTEXT_FOR_AWAIT_OF, /**< for-await-of context */
 
@@ -81,7 +78,6 @@ typedef enum
   VM_CONTEXT_ITERATOR, /**< iterator context */
   VM_CONTEXT_OBJ_INIT, /**< object-initializer context */
   VM_CONTEXT_OBJ_INIT_REST, /**< object-initializer-rest context */
-#endif /* JERRY_ESNEXT */
 } vm_stack_context_type_t;
 
 /**
@@ -90,10 +86,8 @@ typedef enum
 typedef enum
 {
   VM_CONTEXT_FOUND_FINALLY, /**< found finally */
-#if JERRY_ESNEXT
   VM_CONTEXT_FOUND_ERROR, /**< found an error */
   VM_CONTEXT_FOUND_AWAIT, /**< found an await operation */
-#endif /* JERRY_ESNEXT */
   VM_CONTEXT_FOUND_EXPECTED, /**< found the type specified in finally_type */
 } vm_stack_found_type;
 
@@ -105,11 +99,7 @@ typedef enum
  * - [JS values belong to the context]
  * - [previous JS values stored by the VM stack]
  */
-#if JERRY_ESNEXT
 #define VM_CONTEXT_IS_VARIABLE_LENGTH(context_type) ((context_type) >= VM_CONTEXT_ITERATOR)
-#else /* !JERRY_ESNEXT */
-#define VM_CONTEXT_IS_VARIABLE_LENGTH(context_type) false
-#endif /* JERRY_ESNEXT */
 
 /**
  * Checks whether the context type is a finally type.
@@ -131,11 +121,9 @@ typedef enum
  */
 #define VM_CONTEXT_GET_NEXT_OFFSET(offsets) (-((int32_t) ((offsets) & ((1 << VM_CONTEXT_OFFSET_SHIFT) - 1))))
 
-#if JERRY_ESNEXT
 ecma_value_t *vm_stack_context_abort_variable_length (vm_frame_ctx_t *frame_ctx_p,
                                                       ecma_value_t *vm_stack_top_p,
                                                       uint32_t context_stack_allocation);
-#endif /* JERRY_ESNEXT */
 ecma_value_t *vm_stack_context_abort (vm_frame_ctx_t *frame_ctx_p, ecma_value_t *vm_stack_top_p);
 vm_stack_found_type vm_stack_find_finally (vm_frame_ctx_t *frame_ctx_p,
                                            ecma_value_t *stack_top_p,