Log Message:
Update to 1.47, from Hiramatsu Yoshifumi in PR 21639.
Changes since 1.42:
        - do not create files in blib directories under core
          (perl change #19160, from rgs)
        - detypo s/VTLARM/VTARLM/ (perl change #19328, from mjd)
        - guarantee that $xdefine in HiRes.t is always defined
          (perl change #19109, from IlyaZ)
        - a cleaner way to detect PERL_CORE (perl change #19111,
          from IlyaZ)
        - add hints/irix.pl to turn off overly POSIX flags that
          cause hide struct timespec to be hidden (and compilation
          to fail) (bleadperl change #19085)
        - documentation tweaks