Subversion supports symbolic link, as stated in http://subversion.tigris.org/. Here is the quote:
Versioning of symbolic links
Unix users can place symbolic links under version control. The links are recreated in Unix working copies, but not in win32 working copies.
it's simple to test this. In a directory where you have svn code checked out, do
% ln -s file file_link
% svn add file_link
% svn ci
Recent comments
8 weeks 6 days ago
9 weeks 5 days ago
20 weeks 4 days ago
22 weeks 14 hours ago
30 weeks 5 days ago
31 weeks 7 hours ago
31 weeks 6 days ago
32 weeks 5 days ago
32 weeks 6 days ago
33 weeks 7 hours ago