use true names for executables

relying on https://developer.android.com/ndk/guides/wrap-script#packaging_wrapsh

Author: alexcohn

android-ffmpeg/src/main/java/nl/bravobit/ffmpeg/FileUtils.java

@@ -5,8 +5,8 @@
 import java.io.File;
 
 class FileUtils {
-    private static final String FFMPEG_FILE_NAME = "lib..ffmpeg..so";
-    private static final String FFPROBE_FILE_NAME = "lib..ffprobe.so";
+    private static final String FFMPEG_FILE_NAME = "ffmpeg";
+    private static final String FFPROBE_FILE_NAME = "ffprobe";
 
     static File getFFmpeg(Context context) {
         File folder = new File(context.getApplicationInfo().nativeLibraryDir);