Add the ability to turn on proguard for java targets, and to call aapt
to generate a rules file for proguard for stuff from the manifest and
other resources that need to be kept.
diff --git a/core/definitions.mk b/core/definitions.mk
index ccefafa..83834bf 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1167,6 +1167,7 @@
$(addprefix -S , $(PRIVATE_RESOURCE_DIR)) \
$(addprefix -A , $(PRIVATE_ASSET_DIR)) \
$(addprefix -I , $(PRIVATE_AAPT_INCLUDES)) \
+ $(addprefix -G , $(PRIVATE_PROGUARD_OPTIONS_FILE)) \
$(addprefix --min-sdk-version , $(DEFAULT_APP_TARGET_SDK)) \
$(addprefix --target-sdk-version , $(DEFAULT_APP_TARGET_SDK)) \
$(addprefix --version-code , $(PLATFORM_SDK_VERSION)) \