Description of problem:
When PeriodicRotatingFileHandler with suffix "yyyy-ww" rotates a log file over a year, file that belongs to the new year is incorrectly named using the previous year.


Version-Release number of selected component (if applicable):
JBoss LogManager 1.5.2.Final


How reproducible:
Always.


Steps to Reproduce:
1. Copy and paste the following code into src/test/java/org/jboss/logmanager/handlers/PeriodicSizeRotatingFileHandlerTests.java.
~~~
    @Test
    public void testPeriodicRotateWeekOfYear() throws Exception {
        SimpleDateFormat fmt = periodFormatMap.get(Calendar.WEEK_OF_YEAR);
        Calendar cal = Calendar.getInstance(java.util.TimeZone.getTimeZone("GMT"));
        
        PeriodicRotatingFileHandler handler = new PeriodicRotatingFileHandler();
        handler.setAutoFlush(true);
        handler.setFormatter(new PatternFormatter("%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p [%c] (%t) %s%E%n"));
        handler.setSuffix("." + fmt.toPattern());
        handler.setFile(logFile);
        
        cal.set(Calendar.YEAR, 2014);
        cal.set(Calendar.MONTH, 12 - 1);
        cal.set(Calendar.DAY_OF_MONTH, 24);
        cal.set(Calendar.HOUR_OF_DAY, 12);
        
        for (int i = 0; i < 14; i++) {
                long tim = cal.getTimeInMillis();
                String fdate = fmt.format(tim);
                ExtLogRecord record = createLogRecord("%02d th formatted date is %s", i, fdate);
                record.setMillis(tim);
            handler.publish(record);
            
                cal.add(Calendar.DAY_OF_MONTH, 1);
        }
        
        handler.close();
        
        for (String logFile : BASE_LOG_DIR.list()) {
                System.out.println(logFile);
        }

        Assert.assertTrue("Succeed.", true);
    }
~~~

2. Run the above test code by the following command
mvn compile test -Dtest=PeriodicSizeRotatingFileHandlerTests#testPeriodicRotateWeekOfYear

(You may need "-Dmaven.surefire.debug" as well to stop the test because the resulting files under target/logs will be deleted after every test.)


Actual results:
~~~
% ll logs                                                                                  
total 12K
-rw-r--r--. 1 onagano onagano 228 Dec  5 17:09 rotating-file-handler.log
-rw-r--r--. 1 onagano onagano 532 Dec  5 17:09 rotating-file-handler.log.2014-01
-rw-r--r--. 1 onagano onagano   0 Dec  5 17:09 rotating-file-handler.log.2014-49
-rw-r--r--. 1 onagano onagano 304 Dec  5 17:09 rotating-file-handler.log.2014-52
% cat logs/rotating-file-handler.log.2014-52                                               
2014-12-24 21:09:43,921 INFO  [null] (main) 00 th formatted date is 2014-52
2014-12-25 21:09:43,921 INFO  [null] (main) 01 th formatted date is 2014-52
2014-12-26 21:09:43,921 INFO  [null] (main) 02 th formatted date is 2014-52
2014-12-27 21:09:43,921 INFO  [null] (main) 03 th formatted date is 2014-52
% cat logs/rotating-file-handler.log.2014-01                                               
2014-12-28 21:09:43,921 INFO  [null] (main) 04 th formatted date is 2014-01
2014-12-29 21:09:43,921 INFO  [null] (main) 05 th formatted date is 2014-01
2014-12-30 21:09:43,921 INFO  [null] (main) 06 th formatted date is 2014-01
2014-12-31 21:09:43,921 INFO  [null] (main) 07 th formatted date is 2014-01
2015-01-01 21:09:43,921 INFO  [null] (main) 08 th formatted date is 2015-01
2015-01-02 21:09:43,921 INFO  [null] (main) 09 th formatted date is 2015-01
2015-01-03 21:09:43,921 INFO  [null] (main) 10 th formatted date is 2015-01
% cat logs/rotating-file-handler.log                                                       
2015-01-04 21:09:43,921 INFO  [null] (main) 11 th formatted date is 2015-02
2015-01-05 21:09:43,921 INFO  [null] (main) 12 th formatted date is 2015-02
2015-01-06 21:09:43,921 INFO  [null] (main) 13 th formatted date is 2015-02
~~~


Expected results:
File name "rotating-file-handler.log.2014-01" should be "*.2015-01".
Zero-sized "rotating-file-handler.log.2014-49" and lacking #50 and #51 are also strange.