Upgrade to ManifestMerger2

Switch to using ManifestMerger2 from
prebuilts/gradle-plugin/com/android/tools/build/manifest-merger/26.0.0-beta2/manifest-merger-26.0.0-beta2.jar

Bug: 36005379
Test: m -j checkbuild
Change-Id: I83bd3f95778e93796d06f063aa7c61d2a63b117b
diff --git a/core/config.mk b/core/config.mk
index 533eb8a..7a120bc 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -676,7 +676,14 @@
 JACOCO_CLI_JAR := $(HOST_OUT_JAVA_LIBRARIES)/jacoco-cli$(COMMON_JAVA_PACKAGE_SUFFIX)
 
 # Tool to merge AndroidManifest.xmls
-ANDROID_MANIFEST_MERGER := $(JAVA) -classpath prebuilts/devtools/tools/lib/manifest-merger.jar com.android.manifmerger.Main merge
+ANDROID_MANIFEST_MERGER_CLASSPATH := \
+    prebuilts/gradle-plugin/com/android/tools/build/manifest-merger/26.0.0-beta2/manifest-merger-26.0.0-beta2.jar \
+    prebuilts/gradle-plugin/com/android/tools/sdk-common/26.0.0-beta2/sdk-common-26.0.0-beta2.jar \
+    prebuilts/gradle-plugin/com/android/tools/common/26.0.0-beta2/common-26.0.0-beta2.jar \
+    prebuilts/misc/common/guava/guava-21.0.jar
+ANDROID_MANIFEST_MERGER := $(JAVA) \
+    -classpath $(subst $(space),:,$(strip $(ANDROID_MANIFEST_MERGER_CLASSPATH))) \
+    com.android.manifmerger.Merger
 
 COLUMN:= column