Bug 325926

It's sometimes useful to create relative-path symbolic links(e.g. When the containing directory moved relative links won't turn invalid if link target is also in containing directory).

Currently user must first create the link then modify it manually in file properties dialog.

It will be very handy if Dolphin askes which kind of path to use just when creating it.

In my own case I want to make bi-lingual default folders in /etc/skel (e.g. '文件' links to 'Document'), absolute-path links will become invalid since every new user's home-directory is in different path.

Reproducible: Always

Steps to Reproduce:
1.Drag an item in containing-folder with Ctrl-Shift pressed to create a link-to-item
2.Enter the new created link's file properties dialog
3.Manually remove the path to the last slash in "Points to:" textbox
Actual Results:  
User needs to do all 1.~3. to produce relative-path links.

Expected Results:  
Avoid the step 2. and 3.