Log Message:
moreutils: Update to 0.64

pkgsrc changes:
 - Remove patch-is__utf8_Makefile, same problem fixed upstream

Changes:
0.64
----
 - parallel: fix typo in usage message.
 - Makefile: Propagate compiler and linker flags when building is_utf8.
 - ts: Fix parsing of ISO-8601 dates. Thanks, David Laban.
 - parallel: Allow compiling with uClibc-ng, which does not have getloadavg.
   Thanks, Rosen Penev