Log Message:
-Fix non-portable use of strptime(3): SUSv3 does not require it to do
 calendar math and fill in wday/yday. Use mktime(3) to have those fields
 calculated.
-Fix non-portable use of sort(1) (in an example/selftest only): the "-n"
 option should "restrict" the sort key to a numeric field, there is no
 requirement to use another key if no numbers are present.
-bump PKGREVISION