Build android-support-v13-ics-mr1 against SDK 15 (ics-mr1).

Change-Id: I7393b04a10bf2d81012ee00b28dab5695c656a8b
diff --git a/v13/Android.mk b/v13/Android.mk
index 26dde1a..2ba726f 100644
--- a/v13/Android.mk
+++ b/v13/Android.mk
@@ -20,7 +20,7 @@
 # A helper sub-library that makes direct use of Ice Cream Sandwich APIs.
 include $(CLEAR_VARS)
 LOCAL_MODULE := android-support-v13-ics-mr1
-LOCAL_SDK_VERSION := current
+LOCAL_SDK_VERSION := 15
 LOCAL_SRC_FILES := $(call all-java-files-under, ics-mr1)
 include $(BUILD_STATIC_JAVA_LIBRARY)