Add some functions for misaligned load/store support, and use them
in the x86 and amd64 chainer/unchainer.  This makes it possible to
run at least some programs when built with gcc 5.1, with ubsan misaligned
checking enabled.



git-svn-id: svn://svn.valgrind.org/vex/trunk@3160 8f6e269a-dfd6-0310-a8e1-e2731360e62c
4 files changed