Cannot compile when generated command line is too long

[ramon-rocha]

For large projects with many files or a deeply nested structure, the add-in can not compile the project because the generated command line is too long.

This problem exists when trying to compile using either MSBuild or the native MonoDevelop language binding method.

While not directly preventable, we can be smarter about using relative paths whenever possible to mitigate this issue. Alternatively, we can create a temporary file to hold the list of of .cobra file names and pass that to the compiler instead using the -files: compiler parameter.

[ramon-rocha]

When building using MSBuild, I've had some success using the Identity MetaData instead of FullPath thoughout http://cobra-language.com/trac/cobra/browser/cobra/trunk/Source/Cobra.MSBuild/CobraCompiler.cobra#L95. I didn't test it very extensively though.

See here for the difference between these two: http://msdn.microsoft.com/en-us/library/ms164313.aspx

The actual project that triggered this has since been restructured we'll need a dummy project in the add-in test data that can be used to reproduce and fix this bug.