Release guide :
- change version in build.xml and pom.xml, commit
- update staging (clean checkout) directory
- launch ant, check generated packages
- upload packages with winscp to <user>,davmail@frs.sourceforge.net/home/frs/project/d/da/davmail
- generate site : mvn site
- upload site to <user>,davmail@web.sourceforge.net
- create release on sourceforge, write notes, add files
- create news message
- create tag in subversion
- upload version.txt
- send user mailing list message

