Patch Set 1:

- supporting variables here is a good idea
- there was a reason to move the default out of the workspace see [1] and [2]. Other than CVS or SVN not just the working tree is affected but also the cloned repository, if you decide to throw away the Eclipse workspace also your repository is gone. Hence I prefer to leave the default outside the eclipse workspace.

[1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=326374
[2] http://egit.eclipse.org/w/?p=egit.git;a=commit;h=1f972b32da0923e29f78476273b8205eda6051ec