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

Number('0x00007') = 7
Number('0xCAFEBABE') = 3405691582
Number('0xFE') = 254
Number('0xEF') = 239