增加支持全局配置

@@ -362,6 +362,8 @@ public abstract class LogConfigurator {
             s = null;
         }
 
+        log("INFO: guessSlf4jLogSystem = " + s);
+        
         if (s != null) {
             for (String name : providers.keySet()) {
                 if (s.contains(name)) {

@@ -10,6 +10,7 @@ import com.taobao.logconfig.LogConfigurator;
 import com.taobao.maven.plugin.config.ConfigRuntimeImpl;
 import com.taobao.maven.plugin.expand.ExpanderRuntimeImpl;
 import com.taobao.maven.plugin.util.CharsetUtil;
+import com.taobao.maven.plugin.util.StringUtil;
 
 /**
  * Maven plugin to invoke antx-autoconfig.
@@ -82,6 +83,20 @@ public class AutoconfigMojo extends AbstractMojo {
      * @parameter expression="${autoconfig.userProperties}"
      */
     private File userProperties;
+    
+    /**
+     * Shared properties file.
+     * 
+     * @parameter expression="${autoconfig.sharedProperties}"
+     */
+    private String sharedProperties;
+    
+    /**
+     * Shared properties name.
+     * 
+     * @parameter expression="${autoconfig.sharedPropertiesName}"
+     */
+    private String sharedPropertiesName;
 
     public void execute() throws MojoExecutionException, MojoFailureException {
         if (skip) {
@@ -123,6 +138,12 @@ public class AutoconfigMojo extends AbstractMojo {
             if (userProperties != null) {
                 runtimeImpl.setUserPropertiesFile(userProperties.getAbsolutePath(), null);
             }
+            
+            if (sharedProperties != null) {
+                String[] sharedPropertiesFiles = StringUtil.split(sharedProperties, ",");
+                sharedPropertiesName = sharedPropertiesName == null ? "sharedAutoconfig" : sharedPropertiesName;
+                runtimeImpl.setSharedPropertiesFiles(sharedPropertiesFiles, sharedPropertiesName, charset);
+            }
 
             getLog().info(
                     "Configuring " + dest.getAbsolutePath() + ", interactiveMode=" + interactiveMode + ", strict="