Log Message:
p5-Digest-SHA: update to 5.98.

5.98  Wed Oct  4 00:40:02 MST 2017
	- removed "portable" mode from shasum and addfile
		-- rarely used, mostly in outdated systems
		-- potentially confusing features (e.g. \r\r\n -> \n)
		-- Universal Newlines mode (-U) a much cleaner approach
			-- mimics Universal Newlines in Python
	- shasum now uses Digest::SHA explicitly
		-- no longer loads Digest::SHA::PurePerl as an option
			-- hence no need for -R switch
		-- Digest::SHA::PurePerl has its own shasum: shasumpp