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* gpgkeys_ldap.c (main, show_help): Kludge to implement standard GNU options. Factored help printing out. * gpgkeys_finger.c (main, show_help): Ditto. * gpgkeys_hkp.c (main, show_help): Ditto. * gpgkeys_http.c (main, show_help): Ditto. * gpgkeys_test.in, gpgkeys_mailto.in: Implement --version and --help.