import GCC 4.1 branch from today. it includes these bugs fixed since
our last 4.1 branch import, plus a few other changes:
c/27718 26242 c++/27451 c/26818 tree-optimization/26622
target/27758 middle-end/27743 middle-end/27620
tree-optimization/27549 tree-optimization/27283
target/26600 c++/26757 driver/26885 tree-optimization/27603
rtl-optimization/14261 rtl-optimization/22563 middle-end/26729
rtl-optimization/27335 target/27421 middle-end/27384
middle-end/27488 target/27158 bootstrap/26872 target/26545
tree-optimization/27136 tree-optimization/27409 middle-end/27260
tree-optimization/27151 target/26481 target/26765
target/26481 tree-optimization/27285 optimization/25985
tree-optimization/27364 c/25309 target/27387 target/27374
middle-end/26565 target/26826 tree-optimization/27236
middle-end/26869 tree-optimization/27218 rtl-optimization/26685
tree-optimization/26865 target/26961 target/21283 c/26774 c/25875
mudflap/26789
1083f0866d