Bump version to 10.4.9.0

Author: johnhaddon

Changes

@@ -1,4 +1,7 @@
-10.4.x.x (relative to 10.4.8.0)
+10.4.x.x (relative to 10.4.9.0)
+========
+
+10.4.9.0 (relative to 10.4.8.0)
 ========
 
 Improvements

SConstruct

@@ -56,7 +56,7 @@ SConsignFile()
 
 ieCoreMilestoneVersion = 10 # for announcing major milestones - may contain all of the below
 ieCoreMajorVersion = 4 # backwards-incompatible changes
-ieCoreMinorVersion = 8 # new backwards-compatible features
+ieCoreMinorVersion = 9 # new backwards-compatible features
 ieCorePatchVersion = 0 # bug fixes
 ieCoreVersionSuffix = "" # used for alpha/beta releases. Example: "a1", "b2", etc.