Handle IPv6 addresses when reporting open file descriptors.

Based on a patch from Roger Light on BZ#175819.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13836 a5019735-40e9-0310-863c-91ae7b9d1cf9
BZ#331380 cont. Don't crash if evp->sigev_notify is invalid. Fix scalar test.

We check evp.sigev_notify_thread_id only if evp->sigev_notify has
SIGEV_THREAD_ID set. But before checking we need to make sure accessing
evp->sigev_notify is valid.

Fix memcheck/tests/x86-linux/scalar.stderr.exp output.
We now produce separate warnings for the 3 different fields.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13837 a5019735-40e9-0310-863c-91ae7b9d1cf9