+ 7.7.2000 Chris
+ Fixed some bugs in irgopt.c
+ Added some missing 'get_new_node' methods, so the new obstack contains
+ the correct nodes.
+
6.7.2000 Chris
Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
Solved some copy'n'paste problems. Deleted most debug-code!