Updated p5-Log-Log4perl to 1.48.

1.48 (2016/11/14)
  *    (ms) [rt.cpan.org #117377] Moved PatternLayout's documentation of
            DateFormat features to DateFormat.pm to avoid duplication
            and keep the two parts consistent, as suggested by Max Carey.
  *    (ms) [rt.cpan.org #114822] Split two lines with CVS-sensitive
            $Log.. variables into two parts.
  *    (ms) Semaphore issue fixed in Synchronized (reported by
            Siarhei Kuchynski and Martin K旦hler):
          https://github.com/mschilli/log4perl/issues/72
  *    (ms) header_text now works with syswrite (reported by Tom Metro):
          https://github.com/mschilli/log4perl/issues/73

(wiz)