new feature, for multiple domains in a file, with delimiter

[ppKrauss]

The -f parse WHOIS data from a specified file, but only one domain. The interface pwhois -f file domain is good also for multiple domains. It needs only a default delimiter and a --file_delimiter option, to find and isolates the requested domain.

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Produce raw whois with multiple domains (domCat):

whois w3c.org > dom1.txt
whois europa.eu > dom2.txt
echo '********************************' | cat dom1.txt - dom2.txt > domCat.txt