MFC following revisions to stable/10:
r270155
r274490
r274593
r274607
In order to introduce native-xtools target to stable/10. On pfSense, we are working to have a 10.x ARM image and native-xtools is really useful to get packages built using poudriere + qemu-user-static. I just removed usr.bin/sort from the static binaries list because it's broken with -DNO_SHARED on stable/10. Also, I changed MK_foo=no options do -DNO_foo or -DWITHOUT_foo to make it work on stable/10.
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