Allow explicitly specified additional annotations for hiddenapi

Adds the hiddenapi_additional_annotations to allow a library to list
the libraries that provided additional hiddenapi related annotations
for a library.

Modifies merge_csv.py so it can process multiple zip files at the same
time and uses that to merge the embedded .uau files from a module and
those it depends upon.

Bug: 180102243
Test: m droid
      Verified that hiddenapi files (both aggregated ones and for the
      individual modules) are not affected by this change.
Change-Id: I796520021c7357398a9e2a09f1029e4a578b05b3

java/hiddenapi_singleton_test.go

@@ -82,6 +82,10 @@ func TestHiddenAPIIndexSingleton(t *testing.T) {
 			name: "foo",
 			srcs: ["a.java"],
 			compile_dex: true,
+
+			hiddenapi_additional_annotations: [
+				"foo-hiddenapi-annotations",
+			],
 		}
 
 		java_library {
@@ -90,6 +94,12 @@ func TestHiddenAPIIndexSingleton(t *testing.T) {
 			compile_dex: true,
 		}
 
+		java_library {
+			name: "foo-hiddenapi-annotations",
+			srcs: ["a.java"],
+			compile_dex: true,
+		}
+
 		java_import {
 			name: "foo",
 			jars: ["a.jar"],
@@ -112,6 +122,15 @@ func TestHiddenAPIIndexSingleton(t *testing.T) {
 .intermediates/foo/android_common/hiddenapi/index.csv
 `,
 		indexRule)
+
+	// Make sure that the foo-hiddenapi-annotations.jar is included in the inputs to the rules that
+	// creates the index.csv file.
+	foo := ctx.ModuleForTests("foo", "android_common")
+	indexParams := foo.Output("hiddenapi/index.csv")
+	CheckHiddenAPIRuleInputs(t, `
+.intermediates/foo-hiddenapi-annotations/android_common/javac/foo-hiddenapi-annotations.jar
+.intermediates/foo/android_common/javac/foo.jar
+`, indexParams)
 }
 
 func TestHiddenAPISingletonWithPrebuilt(t *testing.T) {