cleaned up usage beahviour
don't need every program telling people how to use unix
pdftohtml/pdftocairo/etc style usage defaults
show argument types, like pdftohtml/pdftocairo/etc
cleaned-up usage descriptions
re-ordered usage descriptions to be more like pdftocairo,etc
re-ordered Param.h to match new usage order
re-ordered manpage to match new usage order and grouping