[xtext-dev] removed dependency on EMF Compare

[Moritz Eysholdt <moritz.eysholdt@xxxxxxxxx>]

Hi all,

we had a dependency on EMF Compare in org.eclipse.xtext.generator.tests: 
Some tests were using it to compare models. I've refactored the code so 
that the comparison is done with the help of the EmfFormatter: Both 
models are serialized and the textual representations are compared. 
Compared to EMF Compare, this is different in two ways:
- it is a little more strict, since now the order of lists is taken into 
account as well. However, all tests stayed green.
- if models are not equal, Eclipse' JUnit support can prettily highlight 
the changes in the textual representation. The old implementation relied 
on console output.

@Patrick, Dennis, Peter: Could one of you remove EMF Compare from the 
list of dependencies within the build process?

thanks...

regards,
 Moritz