interface is used

the curl_easy_strerror() function to provide one

 Gisle's previous mail. We now use this function, and thus we require libidn
 0.4.5 or later. No earler version will do.

not be used both in one request. Fixed it and added test case 172 to verify.

set to the domain .a.b.c (that is with a dot prefix). This is now fixed and
test case 171 verifies it.

once and for all

deleted trailing whitespace

effect globally which isn't nice. Commented it out for now. Display trailing
whitespace still, to remind me.

to detect

the netbsd shell

properly
+ delete trailing whitespace

about that passed-in argument not being used.
* killed trailing whitespace

verification:

- when multiple common names are used (as in the curl tests), the last name
needs to be selected.

- allow comparing with encoded values, at least with BMP and ISO latin1
encoded T61strings.