MFC: r258705,r258709,r263140,r263184,r263185,r263186,r263187,r263188,

MFC: r258705,r258709,r263140,r263184,r263185,r263186,r263187,r263188,
r263189,r263190,r263192,r263193,r263287,r263288,r263890,r264281,
r264655,r264656,r264856,r264857,r264858,r264859,r264860,r264861,
r264891,r264892,r264909

Catch up on all the referenced changes in -current, in brief:

r258705 | n_hibma | Use NANO_PMAKE for build, but not install
r258709 | mr | pkgng goo + bootstrap
r263140 | glebius | Axe IPX.
r263184 | imp | Fix build with spaces in names.
r263185 | imp | Make pcengines config files compile again.
r263186 | imp | Use UFS2 by default, but allow fallback to UFS1
r263187 | imp | Print an error message when we exit out early.
r263188 | imp | Sometimes only copy MBR when backing via swap
r263189 | imp | Update save_cfg
r263190 | imp | Be more explicit about setting SRCCONF to /dev/null
r263192 | imp | Rely on default UFS type
r263193 | imp | Remove TARGET_BIG_ENDIAN. It's no longer relevant.
r263287 | bdrewery | pkg(8) has no limits
r263288 | bdrewery | Remove comment meant for removal in r263287
r263890 | imp | Up default media size to 1GB.
r264281 | imp | Ignore .hg and .git files
r264655 | imp | rm -x for safety
r264656 | imp | new example: dhcpd derived from FreeNAS/BSDRP
r264856 | imp | Override the parallel make target to use all CPUs.
r264857 | imp | No need for true here, remove it.
r264858 | imp | NANO_PKG_META_BASE
r264859 | imp | stylize umount hack
r264860 | imp | switch dhcpd to pkg(8).
r264861 | imp | CR and CR0 added from dhcpd
r264891 | imp | Try to alwaays use () for functions
r264892 | imp | bash whines about r264857, revert
r264909 | imp | Move back to {} for functions that need global effects

git-svn-id: svn://svn.freebsd.org/base/stable/10@265166 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f