review (XS) for 6952176: Remove debug flag from adlc makefile for 6Update trains

[Tom Rodriguez]

http://cr.openjdk.java.net/~never/6952176

6952176: Remove debug flag from adlc makefile for 6Update trains
Reviewed-by:

Some versions of gcc 3.2 have a bug that is triggered by the #line directives
we emit in adlc generated files so don't emit them on earlier versions of gcc.
Tested with jprt.