Merge branch 'master' into inlinec

Merge branch 'master' into inlinec

* master:
  ui.gadgets.tables: clicking in empty area no longer notifies selection model
  vocabs.hierarchy: fix (load) word
  vocabs.hierarchy: more refactoring, update existing code for new API
  help.html: Update for vocabs.hierarchy changes
  help.html: escape # in word names. Reported by ex_rzrjck
  vocabs.hierachy: redo with cleaner API
  compiler.cfg.linear-scan: minor fixes
  webkit-demo: update for recent <ViewWindow> stack effect change
  compiler.cfg.linear-scan: Get cycle breaking in resolve pass to work by allocating a spare spill slot for this purpose