OS400: create architecture directory. Implement dlfcn emulation.
doc/news.html: small update to avoid line join while generating NEWS.
OS400: iconv functions compatibility wrappers and table builder.
OS400: Easy character transcoding support
OS400: UTF8<-->EBCDIC wrappers for system and external library calls
OS400: implement some macros as functions for ILE/RPG language support (that as no macros).
OS400: ILE RPG language header files.
OS400: Add compilation scripts.
OS400: Add README: compilation directives and OS/400 specific stuff.
OS400: include in distribution tarball.