Copy struct inotify_event entries to avoid alignment problems

Copy struct inotify_event entries to avoid alignment problems

When reading the inotify FD, we get back a sequence of
struct inotify_event, each with variable length data following.
It is not safe to simply cast from the char *buf to the
struct inotify_event struct since this may violate data
alignment rules. Thus we must copy from the char *buf
into the struct inotify_event instance before accessing
the data.

uml/uml_driver.c: In function 'umlInotifyEvent':
uml/uml_driver.c:327:13: warning: cast increases required alignment of target type [-Wcast-align]
         e = (struct inotify_event *)tmp;

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>