Fix issues with MD5 checking using chdir and leaving the working
dir in a subfolder that prevented unmounting sometimes.
Change-Id: I01a563d722f474297ed3f7a30064c3a61748ade3
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
Fixed a problem with using make_ext4fs by making its lib
a dynamic lib.
Added ADB sideload zip install feature - no way to cancel it yet.
Improve backup and restore code.
Zip install works, had to move mincrypt code into TWRP to prevent
a crash when checking the zip signature.
Added wipe functions
Made it compile in CM7
Made text show up in console and logging