Clean cruft out of makefiles.

Cleans up manual uses of stlport and bionic (and removes uses of private
bionic headers).

Change-Id: I157309d702e59152adfa3450939082248ae4c043
diff --git a/opengl/tests/hwc/Android.mk b/opengl/tests/hwc/Android.mk
index 86e1d46..d7d59c6 100644
--- a/opengl/tests/hwc/Android.mk
+++ b/opengl/tests/hwc/Android.mk
@@ -15,24 +15,20 @@
 LOCAL_PATH:= $(call my-dir)
 
 include $(CLEAR_VARS)
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 LOCAL_MODULE_TAGS := tests
 LOCAL_MODULE:= libhwcTest
 LOCAL_SRC_FILES:= hwcTestLib.cpp
 LOCAL_C_INCLUDES += system/extras/tests/include \
-    bionic \
-    bionic/libstdc++/include \
-    external/stlport/stlport \
 	$(call include-path-for, opengl-tests-includes)
 
 LOCAL_CFLAGS := -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES
 
-LOCAL_SHARED_LIBRARIES += libcutils libutils libstlport
-LOCAL_STATIC_LIBRARIES += libglTest
-
-
+include external/stlport/libstlport.mk
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 LOCAL_SRC_FILES:= hwcStress.cpp
 
 LOCAL_SHARED_LIBRARIES := \
@@ -65,6 +61,7 @@
 include $(BUILD_NATIVE_TEST)
 
 include $(CLEAR_VARS)
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 LOCAL_SRC_FILES:= hwcRects.cpp
 
 LOCAL_SHARED_LIBRARIES := \
@@ -95,6 +92,7 @@
 include $(BUILD_NATIVE_TEST)
 
 include $(CLEAR_VARS)
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 LOCAL_SRC_FILES:= hwcColorEquiv.cpp
 
 LOCAL_SHARED_LIBRARIES := \
@@ -125,6 +123,7 @@
 include $(BUILD_NATIVE_TEST)
 
 include $(CLEAR_VARS)
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 LOCAL_SRC_FILES:= hwcCommit.cpp
 
 LOCAL_SHARED_LIBRARIES := \