2.2.1 version released

In this distribution:
Improved export to PDF/RTF formats: now it is possible to include a more recent version of iText 2.1.7 (for java 1.5/1.6 only);
changed org.openswing.swing.export.java classses, in order to support both old iText version (for java 1.4) and newer version.

The distribution includes also Jar file libraries, source files, javadoc, licence and readme.txt installation instructions.