switch from ext2 to ext4 (w/o) journaling

Config.in

include/image.mk

scripts/metadata.pl

target/Config.in

target/linux/at91/config-default

target/linux/cobalt/Makefile

target/linux/ep93xx/Makefile

target/linux/ixp4xx/harddisk/config-default

target/linux/kirkwood/config-default

target/linux/mpc52xx/Makefile

target/linux/omap24xx/config-2.6.36

target/linux/omap24xx/config-2.6.37

target/linux/omap35xx/beagleboard/profiles/beagleboard.mk

target/linux/omap35xx/config-2.6.32

target/linux/omap35xx/gumstix/config-2.6.34

target/linux/omap35xx/gumstix/config-2.6.36

target/linux/orion/harddisk/config-default

target/linux/rb532/config-2.6.32

target/linux/rb532/config-2.6.33

target/linux/rb532/config-2.6.34