* options.h, g10.c (main), textfilter.c (len_without_trailing_ws): Removed
(not used). (standard): 2440 says that textmode hashes should canonicalize
line endings to CRLF and remove spaces and tabs.  2440bis-12 says to just
canonicalize to CRLF.  So, we default to the 2440bis-12 behavior, but
revert to the strict 2440 behavior if the user specifies --rfc2440.  In
practical terms this makes no difference to any signatures in the real
world except for a textmode detached signature.