Warn before overwriting existing files.
Warn before overwriting existing files.

svn path=/branches/work/kdab-post-4.0/kdepim/; revision=714765

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi