Revert "Remove layoutopt; replaced by the more generic "lint" tool."

This reverts commit 7a23d45cdca22751c421427ce0e4e12df31945d2.
diff --git a/core/main.mk b/core/main.mk
index e35f228..569d4dc 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -441,6 +441,7 @@
 	sdk/ide_common \
 	sdk/jarutils \
 	sdk/layoutlib_api \
+	sdk/layoutopt \
 	sdk/ninepatch \
 	sdk/rule_api \
 	sdk/lint \
diff --git a/core/user_tags.mk b/core/user_tags.mk
index d44046d..2e7017e 100644
--- a/core/user_tags.mk
+++ b/core/user_tags.mk
@@ -134,6 +134,7 @@
 	gps.mahimahi \
 	gralloc.default \
 	gralloc.qsd8k \
+	groovy-all-1.7.0 \
 	grxmlcompile \
 	guava \
 	guavalib \
@@ -170,6 +171,7 @@
 	layoutlib_api \
 	layoutlib_create \
 	layoutlib_utils \
+	layoutopt \
 	liba2dp \
 	libabi \
 	libandroid \
diff --git a/target/product/sdk.mk b/target/product/sdk.mk
index 25cee17..ceb1898 100644
--- a/target/product/sdk.mk
+++ b/target/product/sdk.mk
@@ -77,6 +77,7 @@
 	ddms \
 	hierarchyviewer \
 	draw9patch \
+	layoutopt \
 	traceview \
 	android \
 	dexdump \
@@ -94,6 +95,7 @@
 	ddmuilib \
 	draw9patch \
 	hierarchyviewer \
+	layoutopt \
 	uix \
 	traceview \
 	anttasks \
@@ -102,6 +104,7 @@
 	sdkmanager \
 	swtmenubar \
 	swing-worker-1.1 \
+	groovy-all-1.7.0 \
 	commons-compress-1.0 \
 	emmalib \
 	jcommon-1.0.12 \