sde-build: reversed the order Build-Target umounts, and made debug.sh umounts lazy

scripts/Build-Pkg

@@ -224,8 +224,8 @@ if [ "$chroot" = 1 ] ; then
 
 		if ! fuser -s "$xroot/TOOLCHAIN/" ; then
 			echo "Loop mounts appear unused - un-mounting ..."
-			umount "$xroot/TOOLCHAIN/"{loop,config,download}
-			umount "$xroot/proc"
+			umount -l "$xroot/TOOLCHAIN/"{download,config,loop}
+			umount -l "$xroot/proc"
 		fi
 	EOT
 	chmod +x $builddir/debug.sh

scripts/Build-Target

@@ -267,8 +267,8 @@ umount_chroot() {
 	exec 201> /dev/null
 	if ! ( cd ${build_logs}; fuser *.log > /dev/null 2>&1 ); then
 		echo_status "Unmounting loop mounts ..."
-		umount -d -f    $build_toolchain/{loop,config,download} 2> /dev/null
-		umount -d -f -l $build_toolchain/{loop,config,download} 2> /dev/null
+		umount -d -f    $build_toolchain/{download,config,loop} 2> /dev/null
+		umount -d -f -l $build_toolchain/{download,config,loop} 2> /dev/null
 		umount -d -f    $build_root/proc 2> /dev/null
 		umount -d -f -l $build_root/proc 2> /dev/null
 	fi