Scripting with Scheme and Python

[edb]

Hello,

It's been a while since the last build so I should have a new build soon, there's been some changes to the "command" type scripts (as that is still a work in progress). After that I'll be making a pull request to add the scripting plugin to wings.

The plugin has also been refactored a little bit so it can be possible to add additional scripting languages without changing anything in the plugin code itself, it would require making a bunch of "init" script code and helper classes for each new scripting language though. I'll be only focusing on the two current scripting languages for now.

The plugin preference dialog now uses wings ui dialog instead of wxDialog, many thanks to micheus help to change it over.