Allow forcing AAPT2 on

Building with FORCE_AAPT2=true will turn on AAPT2 for all modules
unless they set LOCAL_USE_AAPT2 := false.  The build system will
attempt to rewrite common AAPT patterns into AAPT2 patterns,
including removing --extra-packages for support library packages,
removing LOCAL_RESOURCE_DIR point to support library resources,
adding a default empty manifest file if it doesn't exist, and
converting LOCAL_STATIC_JAVA_AAR_LIBRARIES to
LOCAL_STATIC_ANDROID_LIBRARIES.

Bug: 79481102
Test: m checkbuild
Change-Id: I8d9d55fe4d5d5c965c64b0407efe74e0afc35c3a
diff --git a/core/java_common.mk b/core/java_common.mk
index 2695aff..d8f679a 100644
--- a/core/java_common.mk
+++ b/core/java_common.mk
@@ -477,7 +477,7 @@
 ifdef LOCAL_AAPT2_ONLY
 my_link_type += aapt2_only
 endif
-ifdef LOCAL_USE_AAPT2
+ifeq ($(LOCAL_USE_AAPT2),true)
 my_allowed_types += aapt2_only
 endif