Pull up following revision(s) (requested by skrll in ticket #252):
	sys/arch/arm/allwinner/awin_usb.c: revision 1.17
IPL_SCHED -> IPL_VM
Something isn't MP safe.
Pull up following revision(s) (requested by jmcneill in ticket #253):
	external/mit/xorg/lib/libXft/Makefile: revision 1.6
compile xftrender.c with -O0 to workaround a crash in XftGlyphSpecRender
on earm with gcc 4.8.4
tickes 252 & 253