qemu_get_clock() returns a structure containing the time the user wants
to be set (either UTC time, a local time, or a given date). Use mktimegm()
instead of mktime() to convert it into POSIX time without taking the host
timezone into account.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5878 c046a42c-6fe2-441c-8c8c-71466251a162