Add missing NOTICE entries.

Add missing NOTICE block for TagSoup in general NOTICE file.
Add comment in Android.mk to help reviewers locate the NOTICE for apache-http.
Modify build rule for 'am' command to pull in the NOTICE file.

Change-Id: I43c6c1468395b70d0942b3620f12e4b6f3d9a66b
diff --git a/cmds/am/Android.mk b/cmds/am/Android.mk
index 170849d..8b321b3 100644
--- a/cmds/am/Android.mk
+++ b/cmds/am/Android.mk
@@ -12,3 +12,20 @@
 $(TARGET_OUT)/bin/am : $(LOCAL_PATH)/am | $(ACP)
 	$(transform-prebuilt-to-target)
 
+NOTICE_FILE := NOTICE
+files_noticed := bin/am
+
+# Generate rules for a single file. The argument is the file path relative to
+# the installation root
+define make-notice-file
+
+$(TARGET_OUT_NOTICE_FILES)/src/$(1).txt: $(LOCAL_PATH)/$(NOTICE_FILE)
+	@echo Notice file: $$< -- $$@
+	@mkdir -p $$(dir $$@)
+	@cat $$< >> $$@
+
+$(TARGET_OUT_NOTICE_FILES)/hash-timestamp: $(TARGET_OUT_NOTICE_FILES)/src/$(1).txt
+
+endef
+
+$(foreach file,$(files_noticed),$(eval $(call make-notice-file,$(file))))