8034812: remove IDX_INIT macro hack in Node class
Summary: The IDX_INIT macro used by Node::Node(...) to retrieve the Compile object is removed and replaced by a call to Compile::current(). The Node constructor, new operator and all calls to it are adapted accordingly.
Reviewed-by: kvn, jrose, iveresov, goetz
func.x = 3.14
func.arguments[0] = 3.14
func.x = world
func.arguments[0] = world
func.x = changed x
func.arguments[0] = changed x
func.x = changed x
func.arguments[0] = undefined
func.x = changed x
func.arguments[0] = 42
func.x = 33
func.arguments[0] = 42
func2.x = 1
func2.arguments[0] = 3434
func2.y = 3
func2.arguments[1] = 3
func2.y = 54
func2.arguments[1] = 54
func2.y = 67
func2.arguments[1] = 67