Fix wx 2.9 compatibility issue with wx.MessageBox
Fix for renaming of keys in wxp.EditStringDictDialog
Allow to use both 'tab' and 'return' for auto-completing the preset
Fix rare exception on function autocomplete

The exception ocurred after removing a function definition by unchecking
the function definition sources on the program settings or removing the
plugin/avsi, if its preset was edited by the user.
Fix slow typing on very large scripts

- Now the folding is only updated on the text that needs restyling
- Some improvements to the syntax highlighting

Working with long scripts will still be slow if 'wrap text' is enabled

[issue #14]
Only select an item on a wxp.EditStringDictDialog if the list is not empty
Fix encoding error when reporting an invalid parameter-type string
Simplify excluding functions from autocomplete

Until now there were two ways for excluding a function from the
autocomplete list:
- Unchecking its entry on the 'AviSynth function definition' dialog:
  this made the function inexistent to AvsP: no highlighting on a
  script, no calltip, no parameter autocomplete, no sliders.
- Unchecking it on 'Customize autocomplete keyword list' (program
  settings): this only excluded the function from autocomplete, and
  in addition for plugins it could be chosen to only show the short
  name and not the longer mangled form, or the other way around.

'Customize autocomplete keyword list' is removed now, and some changes
have been made to the 'AviSynth function definition' dialog:
- Unchecking a function only excludes it from autocomplete.
- A context menu has been added to the 'plugins' tab, for choosing
  between showing long, short or both names for each function.
- 'Delete' button now resets to default edited function definitions
  (same as clicking 'reset to default' and checking auto-generate
  preset from within the definition editor) and deletes definitions
  added by the user.  Previously it only unchecked its entry,
  optionally removing user definitions.
Add workaround for slow typing with text wrapping enabled

issue #14
Fix crash on start when using a non-ASCII translation of the autocrop sample size

Thanks to niiyan
Updates to japanese translation
Improve handling of removed functions with only its preset edited

- Handle also user script functions
- Make it work correctly for all cases
- Save less data to options.dat

Also fix a silly mistake in a74cc18a
Release AvsPmod v2.4.3