fix character bom error

src/main/java/com/alibaba/druid/proxy/DruidDriver.java

@@ -144,7 +144,7 @@ public class DruidDriver implements Driver, DruidDriverMBean {
     }
 
     /**
-     * �数定义�com.alibaba.druid.log.LogFilter=filter com.alibaba.druid.log.LogFilter.p1=prop-value
+     * 参数定义： com.alibaba.druid.log.LogFilter=filter com.alibaba.druid.log.LogFilter.p1=prop-value
      * com.alibaba.druid.log.LogFilter.p2=prop-value
      * 
      * @param url

src/main/java/com/alibaba/druid/stat/DruidStatManagerFacade.java

@@ -33,9 +33,12 @@ import com.alibaba.druid.util.JdbcSqlStatUtils;
 import com.alibaba.druid.util.StringUtils;
 
 /**
- * 监控相关的对外数�暴� * 
+ * 监控相关的对外数据暴露
+ * 
  * <pre>
- * 1. 为了支�jndi数��本类内部调用druid相关对象�需��射调�返回值也应该是Object,List<Object>,Map<String,Object>等无关于druid的类� * 2. 对外暴露的public方法都应该先调用init()，应该有更好的方�，暂时没想� * </pre>
+ * 1. 为了支持jndi数据源本类内部调用druid相关对象均需要反射调用,返回值也应该是Object,List<Object>,Map<String,Object>等无关于druid的类型
+ * 2. 对外暴露的public方法都应该先调用init()，应该有更好的方式，暂时没想到
+ * </pre>
  * 
  * @author sandzhang<sandzhangtoo@gmail.com>
  */

src/main/java/com/alibaba/druid/stat/JdbcSqlStat.java

@@ -394,7 +394,7 @@ public final class JdbcSqlStat implements JdbcSqlStatMBean {
             long current = executeSpanNanoMax.get();
             if (current < nanoSpan) {
                 if (executeSpanNanoMax.compareAndSet(current, nanoSpan)) {
-                    // �航�銝滚�蝖殷�雿�糓蝏嘥之憭𡁏㺭���銝钅�隡𡁏迤蝖殷��扯��Ｗ�銝?稲�?
+                	// 可能不准确，但是绝大多数情况下都会正确，性能换取一致性
                     executeNanoSpanMaxOccurTime = System.currentTimeMillis();
 
                     break;

src/main/java/com/alibaba/druid/util/ServletPathMatcher.java

@@ -19,7 +19,7 @@ public class ServletPathMatcher implements PatternMatcher {
 
     /**
      * <p>
-     * three type: endsWithMatch(eg. /xxx*=/xxx/xyz), startsWithMatch(eg. *.xxx=abc.xxx), equals(eg. /xxx=/xxx)�
+     * three type: endsWithMatch(eg. /xxx*=/xxx/xyz), startsWithMatch(eg. *.xxx=abc.xxx), equals(eg. /xxx=/xxx).
      * </p>
      * <b>Notice</b>: *xxx* will match *xxxyyyy. endsWithMatch first.
      */