Feat[jar launcher]: add log output

- rename 'Install .jar' to 'Execute .jar'

JavaApp/src/main/java/net/kdt/pojavlaunch/PojavLauncher.java

@@ -49,7 +49,7 @@ public class PojavLauncher {
             Class.forName("com.github.caciocavallosilano.cacio.ctc.CTCPreloadClassLoader");
         } catch (ClassNotFoundException e) {}
 
-        if (args[0].equals(".LaunchJAR")) {
+        if (args[0].equals("--launchJar")) {
             UIKit.callback_JavaGUIViewController_launchJarFile(args[1]);
         } else {
             launchMinecraft(args);

JavaApp/src/main/java/net/kdt/pojavlaunch/Tools.java

@@ -51,8 +51,6 @@ public final class Tools {
 
     public static final String ASSETS_PATH = DIR_GAME_NEW + "/assets";
     public static final String OBSOLETE_RESOURCES_PATH=DIR_GAME_NEW + "/resources";
-    
-    public static final String NATIVE_LIB_DIR = "@executable_path/Frameworks";
 
     public static void launchMinecraft(MinecraftAccount profile, final JMinecraftVersionList.Version versionInfo) throws Throwable {
         String[] launchArgs = getMinecraftArgs(profile, versionInfo);
@@ -103,7 +101,7 @@ public final class Tools {
         varArgMap.put("user_type", "msa");
         varArgMap.put("version_name", versionName);
         varArgMap.put("version_type", versionInfo.type);
-        varArgMap.put("natives_directory", Tools.NATIVE_LIB_DIR);
+        varArgMap.put("natives_directory", System.getProperty("java.library.path"));
 
         List<String> minecraftArgs = new ArrayList<String>();
         if (versionInfo.arguments != null) {