perl: bump to version 5.18.1

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
perl: fix private patch
qemu: bump to version 1.6.0

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>