Silence annoying Perl warnings that spam output.
Use more generic tests for OpenBSD platform.
Add --vendor to krb5-config. Sort options while there.
Add possibility to use custom pkg-config files. Provide the one for com_err library.
Unbreak compilation when GNU readline package is installed.
Add a comment to patch.
Zap extra argument that forced configure to be run twice.
Add --private-libraries, not sure this even work in this hell, but
this is the way to go anyway.