Update branches and remove ea for 0.57

Signed-off-by: Peter Shipton <Peter_Shipton@ca.ibm.com>

Author: pshipton

get_source.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 # ===========================================================================
-# (c) Copyright IBM Corp. 2017, 2025 All Rights Reserved
+# (c) Copyright IBM Corp. 2017, 2026 All Rights Reserved
 # ===========================================================================
 # This code is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License version 2 only, as
@@ -71,15 +71,8 @@ add_source() {
 #
 configure_defaults() {
 	local current_branch="$(git rev-parse --abbrev-ref HEAD)"
-	local openj9_branch=master
-	local omr_branch=openj9
-
-	# If this repository is on a release branch, use the same branch names
-	# for OpenJ9 and OMR.
-	if [[ "$current_branch" =~ (ibm-)?(v[0-9]+\.[0-9]+(\.[0-9]+)?-release) ]] ; then
-		openj9_branch="${BASH_REMATCH[2]}"
-		omr_branch="${BASH_REMATCH[2]}"
-	fi
+	local openj9_branch=v0.57.0-release
+	local omr_branch=v0.57.0-release
 
 	#          folder       URL                                               branch          options
 	#          ------       ---                                               ------          -------

jdk/make/closed/autoconf/custom-spec.gmk.in

@@ -1,5 +1,5 @@
 # ===========================================================================
-# (c) Copyright IBM Corp. 2017, 2025 All Rights Reserved
+# (c) Copyright IBM Corp. 2017, 2026 All Rights Reserved
 # ===========================================================================
 # This code is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License version 2 only, as
@@ -72,7 +72,7 @@ USERNAME                := @USERNAME@
 include $(SRC_ROOT)/closed/openjdk-tag.gmk
 
 JDK_FIX_VERSION         := @JDK_FIX_VERSION@
-J9JDK_EXT_VERSION       := $(JDK_MINOR_VERSION).$(JDK_MICRO_VERSION).$(JDK_UPDATE_VERSION).$(JDK_FIX_VERSION)-ea
+J9JDK_EXT_VERSION       := $(JDK_MINOR_VERSION).$(JDK_MICRO_VERSION).$(JDK_UPDATE_VERSION).$(JDK_FIX_VERSION)
 J9JDK_EXT_NAME          := Extensions for OpenJDK for Eclipse OpenJ9
 
 # required by CMake