[henshin-dev] Refactored 'common' plug-in

[Christian Krause <henshin.ck@xxxxxxxxx>]

Hi all,

as discussed in the forum, I made some refactorings for the plug-in 
'common'. The plug-in is now called 'matching'. The class 'ModelChange' 
moved into the interpreter plug-in. The internal packages are no longer 
internal.

Please do the following to update your local plug-in:

1) Remove the plug-in 'common' from your workspace.
2) Check out the plug-in 'matching' instead.
3) Update all your other plug-ins (some dependencies have changed)

If you encounter any problems, let me know.

Ciao,
Christian