[CMake] subversion

[Andreas Naumann]

Dear cmake users,

I have a question if, and how, you use the Subversion module of cmake.
The module provides the macro Subversion_WC_INFO, which extracts 
information of a working copy. I use this information, to generate a sub 
minor revision number of my project.
If I checkout my project using svn, it works. But if I export it, the 
modules failes with a fatal error.
At the moment, I check, if my directory is a working copy and if it is 
not, the version variable is not defined. In my oppinion, it would be 
better, if the macro from the subversion module would simply define a 
variable "is_working_directory" instead of failing hard.
What do you think about this idea? How do you use the subversion module?
The patch would be easy, and I would send one to the developer mailing 
list, if desired.

Regards,
Andreas