Btrfs progs v3.19-rc1

Signed-off-by: David Sterba <dsterba@suse.cz>
diff --git a/version.sh b/version.sh
index 81de5a2..5872d40 100755
--- a/version.sh
+++ b/version.sh
@@ -6,7 +6,7 @@
 # Copyright 2008, Oracle
 # Released under the GNU GPLv2
  
-v="v3.18.2"
+v="v3.19-rc1"
 
 opt=$1