Twisted said:
Why do you think that everyone who's anyone uses SVN now?
Becuase they're cheap. From Wikipedia:
Subversion currently lacks proper repository administration and
management tools. That is,
while it is very capable when data is added to the repository, it is
much less capable at managing
the repository as a whole. For instance, it is sometimes necessary to
make permanent edits to the
repository to change the structure in which versions are held or to
permanently remove data that
was checked into the repository in error. Subversion does not have tools
which allow this to be done.
The check-in level tools allow files and directories to be moved or
deleted but earlier revisions will
always hold the data in the old structure or hold the file that was
deleted. The current solution to this
sort of problem involves 'dumping' the repository, editing the resulting
(possibly large) text file, and
then recreating the repository. For simple renaming or removal of files
this is fairly straight-forward,
but other alterations can be more complex and hence error-prone.