add chromium to list of browsers to look for
de-dupe :EclimHelp command completion results
fix duplication of tags in eclim's vim help files

- create an extension to the include directive which allows a ref-suffix
  to be specified, which will be appended to all reference anchors
- add hard coded suffix for java .classpath and dltk .buildpath :New*
  commands to prevent some of them from clashing.