[gcc r14-11207] testsuite: The expect framework might introduce CR in output

https://gcc.gnu.org/g:f43a6bd08797eae0243b4110b2fbd4700a349ce7 commit r14-11207-gf43a6bd08797eae0243b4110b2fbd4700a349ce7 Author: Torbjörn SVENSSON Date: Sat Jan 11 19:16:57 2025 +0100 testsuite: The expect framework might introduce CR in output When running tests using the "sim"

[gcc r15-6828] testsuite: libstdc++: Use effective-target libatomic

https://gcc.gnu.org/g:4b0ef49d02f1f16325aa53fee3b0f6860728d2f8 commit r15-6828-g4b0ef49d02f1f16325aa53fee3b0f6860728d2f8 Author: Torbjörn SVENSSON Date: Mon Dec 23 18:46:10 2024 +0100 testsuite: libstdc++: Use effective-target libatomic Test assumes libatomic.a is always available