* Added a '%wc' ['Industry Standard Commercial Identification (ISCI)
Code'] metadata wildcard.
* Implemented the '%wc' metadata wildcard for PyPAD.
* Added support for the '%wc' wildcards to the '--metadata-pattern='
switch in rdimport(1).
* Added '--set-string-isci' switch to rdimport(1).
* Added support for the '%wc' wildcard to the '--metadata-pattern='
switch in rdexport(1).