Log Message:
Updated to version 0.18.

Pkgsrc changes:
  - Removed p5-Crypt-RSA and p5-Crypt-OpenSSL-Bignum as direct requirements.
  - Added patterns to CHECK_INTERPRETER_SKIP to avoid messages about missing
    /usr/bin/perl.

Relevant changes since version 0.17:
====================================
 * no longer depends on Crypt::RSA or Crypt::OpenSSL::Bignum.