Debug facilities:
- add a framework to easily add new ones
- add gdb as a first debug facility
- add patches for gdb
After the kernel checked its installed headers, clean up the mess of .checked.* files.
Reorder scripts/crosstool.sh:
- dump the configuration early
- renice early
- get info about build system early, when setting up the environment
- when in cross or native, the host tools are those of the build system, and only in this case
- elapsed time calculations moved to scripts/functions
Remove handling of the color: it's gone once and for all.
Update tools/addToolVersion.sh:
- handle debug facilities
- commonalise some code
- remove dead tools (cygwin, tcc)
Point to my address for bug reports.

 Index: gcc/gcse.c

 ===================================================================

 RCS file: /cvs/gcc/gcc/gcc/gcse.c,v

 retrieving revision 1.288.2.9

 diff -u -p -F^\([(a-zA-Z0-9_]\|#define\) -r1.288.2.9 gcse.c

 --- gcc/gcc/gcse.c	30 Oct 2004 18:02:53 -0000	1.288.2.9

 +++ gcc/gcc/gcse.c	14 Jul 2005 13:19:57 -0000

 @@ -6445,7 +6445,7 @@ hoist_code (void)

  	  insn_inserted_p = 0;

  	  /* These tests should be the same as the tests above.  */

 -	  if (TEST_BIT (hoist_vbeout[bb->index], i))

 +	  if (TEST_BIT (hoist_exprs[bb->index], i))

  	    {

  	      /* We've found a potentially hoistable expression, now

  		 we look at every block BB dominates to see if it