Update version for 1.5.0-rc3 release

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/VERSION b/VERSION
index 0101924..80fd6ef 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.4.92
+1.4.93