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

SyntaxError:33:Expected l-value but found +
++ +3
   ^
SyntaxError:33:Expected l-value but found -
++ -7
   ^
SyntaxError:33:Expected l-value but found +
-- +2
   ^
SyntaxError:33:Expected l-value but found -
-- -8
   ^