Create one rule per one corpus/data files

To avoid MAX_ARG_STRLEN hardlimit.

Test: build and check intermediate directory
Change-Id: I44db1ed14cae4de6ace5b25a392d394d0f9f617a

rust/rust.go

@@ -43,6 +43,7 @@ func init() {
 	android.PostDepsMutators(func(ctx android.RegisterMutatorsContext) {
 		ctx.BottomUp("rust_sanitizers", rustSanitizerRuntimeMutator).Parallel()
 	})
+	pctx.Import("android/soong/android")
 	pctx.Import("android/soong/rust/config")
 	pctx.ImportAs("cc_config", "android/soong/cc/config")
 	android.InitRegistrationContext.RegisterParallelSingletonType("kythe_rust_extract", kytheExtractRustFactory)