[avr-gcc-list] Improving in leaps and skips!

[Andy Hutchinson]

I've been busy!

With Bjoern help, I now have testsuite running against AVR and GCC 4.0.

There are many problems trying to run inappropriate tests as he stated 
and I dont have his patches suitable for 4.0 head.

Nevermind! It still gives me a way to check some other improvments to 
the compiler.

I now have the new and improved "skip" routines debugged - with no 
apparent testsuite regressions on the last dry run.

This code make far better use of skip instructions. In addition (an the 
main reason I did it), the skip instruction no longer mess up the end of 
do loops!

I am waiting for the tests to complete and then I will post patch. The 
tests take about 2 hours to run. (it would be quicker if I didnt have to 
run all of the broken ones!)

BR