rename some example files to match library docs
remove some stale html files R CMD check does not like
hide gtkCleanup function as .gtkCleanup
documentation generator now wraps usage elements
Sys.putenv => Sys.setenv
updates to doc gen script
add some new example ports
add cleanup script to get rid of src/Makevars, etc
rework ignores
regenerate documentation
avoid introducing new paragraphs in Rd due to \n\n in the XML
utility script for merging docs; should get smarter
discard some (superseded) redundant Rd files
manual tweaks to a few Rd files
document GQuark