Comment 9 for bug 1400320

ok lets spec it in the way above:

+ [mvo] add app tmp dir to FHS spec: /tmp/snapps/app/version/
+ [mvo] snappy will create that dir if not exist
+ [jdstrand] apparmor default policy will allow the binaries access to their own tmp dir
+ [mvo] snappy will set SNAPP_TMPDIR, TMPDIR and TEMPDIR to that directory for max convenience.