merge in jb-release history after reset to master
diff --git a/core/Makefile b/core/Makefile
index 819eb38..8d0dfed 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1382,6 +1382,12 @@
 ifneq (,$(strip $(wildcard sdk/build/tools.$(TARGET_ARCH).atree)))
   sdk_tools_atree_files += sdk/build/tools.$(TARGET_ARCH).atree
 endif
+ifneq (,$(strip $(wildcard sdk/build/tools.$(HOST_OS).atree)))
+  sdk_tools_atree_files += sdk/build/tools.$(HOST_OS).atree
+endif
+ifneq (,$(strip $(wildcard sdk/build/tools.$(HOST_OS)-$(HOST_ARCH).atree)))
+  sdk_tools_atree_files += sdk/build/tools.$(HOST_OS)-$(HOST_ARCH).atree
+endif
 
 sdk_atree_files := \
 	$(atree_dir)/sdk.exclude.atree \
diff --git a/core/build_id.mk b/core/build_id.mk
index 576e8c3..40bb35d 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -1,4 +1,3 @@
-
 #
 # Copyright (C) 2008 The Android Open Source Project
 #
@@ -14,9 +13,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+
+#
+# Defines branch-specific values.
+#
+
 # BUILD_ID is usually used to specify the branch name
 # (like "MAIN") or a branch name and a release candidate
-# (like "CRB01").  It must be a single word, and is
+# (like "TC1-RC5").  It must be a single word, and is
 # capitalized by convention.
+#
+BUILD_ID := MASTER
 
-export BUILD_ID=JRM61C
+# DISPLAY_BUILD_NUMBER should only be set for development branches,
+# If set, the BUILD_NUMBER (cl) is appended to the BUILD_ID for
+# a more descriptive BUILD_ID_DISPLAY, otherwise BUILD_ID_DISPLAY
+# is the same as BUILD_ID
+DISPLAY_BUILD_NUMBER := true
diff --git a/core/config.mk b/core/config.mk
index 47d675a..8c9749e 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -73,6 +73,8 @@
 BUILD_NATIVE_TEST := $(BUILD_SYSTEM)/native_test.mk
 BUILD_HOST_NATIVE_TEST := $(BUILD_SYSTEM)/host_native_test.mk
 
+-include cts/build/config.mk
+
 # ###############################################################
 # Parse out any modifier targets.
 # ###############################################################