tree-pass.h: Added comment about not dumping passes with name starting with star...

tree-pass.h: Added comment about not dumping passes with name starting with star in struct...

2008-08-01  Basile Starynkevitch  <basile@starynkevitch>
	* gcc/tree-pass.h: Added comment about not dumping passes with name
	starting with star in struct opt_pass.
	* gcc/passes.c (register_dump_files_1): Don't do dump for a pass with
	name starting with star.
	* gcc/doc/passes.texi (Pass manager): Mention pass names and special
	meaning of star prefix to avoid dump.

From-SVN: r138450