Auto-sync with upstream branch master
    
    Upstream commit: 352bb99754ae7c83ff1b974f9c52244e974c9410
    
    - Build raise with -fasynchronous-unwind-tables.
    - Fix locale/tst-locale-locpath cross-testing when sshd sets LANG.
    - Fix elf/tst-rtld-preload cross-testing.
    - Fix cross-testing of tst-ifunc-fault-* tests.
    - gitlog-to-changelog: Drop scripts in favour of gnulib version
    - Add NEWS entry about the change in handling of PT_GNU_STACK on MIPS
    - Fix array overflow in backtrace on PowerPC (bug 25423)
    - getaddrinfo: Fix resource leak after strdup failure in gethosts (swbz#25425)