Pull fix for exFAT from original source

http://code.google.com/p/exfat/source/detail?r=336

Change-Id: Ie8453770a4dcb31283012550f28483ad88bdc267
file manager updates for exFAT

Change-Id: I06fa6120a975cbc3d4eef9bc2ca034ec716740ee
Reset progress bar in ORS

Change-Id: Ia7df2fa80712dc9ff7fda97261fefa33ce823ae0
Update exFAT to 1.0

Change-Id: I059cf52c41e76c584f76534b84af8b398d9e4617
Fix subpartitionof flag
exFAT improvements, fixes

Move Exec_Cmd to libcrecovery __popen
Provide opt out build flag for exFAT
Default fstype to exfat on external storage if exfat support is
present and fstype is vfat or auto
Fix invalid unmount errors
Improve handling of unencrypted sdcards on Samsung devices
Change version to 2.4.0.0