Incorporate TARGET_VENDOR_RELEASE_BUILD_ID into the build identifier if it exists

Change-Id: I24d422abd3817c55cffe17166fb30d7efe48e0a0

config/common.mk

@@ -291,7 +291,15 @@ else
 endif
 
 ifeq ($(CM_BUILDTYPE), RELEASE)
-    CM_VERSION := $(PRODUCT_VERSION_MAJOR).$(PRODUCT_VERSION_MINOR).$(PRODUCT_VERSION_MAINTENANCE)$(PRODUCT_VERSION_DEVICE_SPECIFIC)-$(CM_BUILD)
+    ifndef TARGET_VENDOR_RELEASE_BUILD_ID
+        CM_VERSION := $(PRODUCT_VERSION_MAJOR).$(PRODUCT_VERSION_MINOR).$(PRODUCT_VERSION_MAINTENANCE)$(PRODUCT_VERSION_DEVICE_SPECIFIC)-$(CM_BUILD)
+    else
+        ifeq ($(TARGET_BUILD_VARIANT),user)
+            CM_VERSION := $(PRODUCT_VERSION_MAJOR).$(PRODUCT_VERSION_MINOR)-$(TARGET_VENDOR_RELEASE_BUILD_ID)-$(CM_BUILD)
+        else
+            CM_VERSION := $(PRODUCT_VERSION_MAJOR).$(PRODUCT_VERSION_MINOR).$(PRODUCT_VERSION_MAINTENANCE)$(PRODUCT_VERSION_DEVICE_SPECIFIC)-$(CM_BUILD)
+        endif
+    endif
 else
     ifeq ($(PRODUCT_VERSION_MINOR),0)
         CM_VERSION := $(PRODUCT_VERSION_MAJOR)-$(shell date -u +%Y%m%d)-$(CM_BUILDTYPE)$(CM_EXTRAVERSION)-$(CM_BUILD)