Re-target for ES.Next (#3901)

A list of changes:
- 'es2015-subset' profile is deprecated, and an 'es.next' profile is added.
- The default profile is changed to 'es.next'
- Renamed the JERRY_ES2015 guard to JERRY_ESNEXT
- Renamed JERRY_ES2015_BUILTIN_* guards to JERRY_BUILTIN_*
- Moved es2015 specific tests to a new 'es.next' subdirectory
- Updated docs, targets, and test runners to reflect these changes

Resolves #3737.

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai@inf.u-szeged.hu

jerry-core/ecma/operations/ecma-dataview-object.c

@@ -22,7 +22,7 @@
 #include "ecma-typedarray-object.h"
 #include "ecma-objects.h"
 
-#if ENABLED (JERRY_ES2015_BUILTIN_DATAVIEW)
+#if ENABLED (JERRY_BUILTIN_DATAVIEW)
 
 /** \addtogroup ecma ECMA
  * @{
@@ -333,4 +333,4 @@ ecma_is_dataview (ecma_value_t value) /**< the target need to be checked */
  * @}
  */
 
-#endif /* ENABLED (JERRY_ES2015_BUILTIN_DATAVIEW */
+#endif /* ENABLED (JERRY_BUILTIN_DATAVIEW */