[PROPOSAL] Indent 2 spaces in xml and vm files to match more common usage, especially maven.

[David Jencks]

IIUC we have a coding standard of a 4 space indent for all files  
(documented at http://cwiki.apache.org/GMOxDEV/coding- 
standards.html).  This can make working with maven difficult because  
its files and xml output generatiion use 2 space indent for xml  
and .vm files.

I think we could make life a lot easier when using maven tooling to  
use a 2 space indent for xml and .vm and possibly other files.  At  
least with IDEA its easy to have different indents for java and xml  
files.

Comments?

thanks
david jencks