(ikarus system $foreign).
- changed the names of some of the pointer primitives
- changed the name of the procedure make-ffi to make-callout
- updated examples and libraries to conform with new names
- updated the users guide to provide a complete description of
the (ikarus foreign) library
- updated list of missing R6RS features in the users guide
- Changed license from FDL to GPL
- Added docs about file extensions
- Updated list of missing features (list is down to one page, yay!)
- Updated copyright years in document and ikarus-main.ss (it's 2008!).