SdkSpec = Scope + ApiLevel

SdkSpec.Version was an int type. Now it becomes ApiLevel type which
is a better abstraction of the version (or api level).

Bug: 1655587
Test: m

Change-Id: I4d67b9b9eae45f653b6af4f5b73da9e091b3dfab

java/android_manifest.go

@@ -55,7 +55,7 @@ func manifestFixer(ctx android.ModuleContext, manifest android.Path, sdkContext
 		if err != nil {
 			ctx.ModuleErrorf("invalid minSdkVersion: %s", err)
 		}
-		if minSdkVersion >= 23 {
+		if minSdkVersion.FinalOrFutureInt() >= 23 {
 			args = append(args, fmt.Sprintf("--extract-native-libs=%v", !useEmbeddedNativeLibs))
 		} else if useEmbeddedNativeLibs {
 			ctx.ModuleErrorf("module attempted to store uncompressed native libraries, but minSdkVersion=%d doesn't support it",