XDEV: Add WITH_DEBUG=y for any mips64 build.  Strip is broken for this arch and hasn't been fixed in head/release.
XDEV: Remove path munging as the nxb-bin native-xtools toolchain does not link correctly in a lot of cases.
Don't replace /sbin/sysctl as we need to emulate it to catch sysctl's and translate/override them in our emulator.