fix abootimg call of nexus7 processing harder

debian/changelog

@@ -2,6 +2,7 @@ livecd-rootfs (2.100) UNRELEASED; urgency=low
 
   * clean up the userdata dir
   * move the tarball around instead of copying it
+  * fix quoting of abootimg call harder
 
  -- Oliver Grawert <ogra@ubuntu.com>  Mon, 19 Nov 2012 19:48:42 +0100
 

live-build/auto/build

@@ -378,7 +378,7 @@ if [ "$SUBARCH" = "ac100" ] || [ "$SUBARCH" = "nexus7" ]; then
 
 	if [ "$SUBARCH" = "nexus7" ]; then
 		# adjust the bootimg cmdline parameters
-		Chroot chroot "abootimg -u /boot/installer-${KVERS}.img -c \"cmdline=root=/dev/mmcblk0p9 ro console=tty1 fbcon=rotate:1 quiet splash\""
+		Chroot chroot "abootimg -u /boot/installer-${KVERS}.img -c 'cmdline=root=/dev/mmcblk0p9 ro console=tty1 fbcon=rotate:1 quiet splash'"
 
 		# roll the android rootfs images
 		mkdir -p userdata