Add patch to deal with hw.pagesizes after r264346.  Take from
qemu-devel/files/extra-patch-sysctl-hw-pagesizes
Add fixes for 1bit change to signtramp.  Did I rebase these away or something?  Magic.  Apply patch from freebsd ports emulators/files/
extra-patch-6201cb17ad905dffee1b2eb76f58fb032e99b2a1 and
emulators/files/extra-patch-d62553b108aa27c0c020dbb771d29f8673807a3b