fix compile u-boot failed
update linux-sunxi to v3.4.79-r0
update drivers to 3.4.79 of initramfs
update pack tools for pcduino3
update drivers & config for pcduino3(udc/sata/wifi/ir)
make led2 work for rtl8188eus module on pcduino3
add script to copy changed files to patch dir for uboot