Log Message:
Update to 0.2.5 and add DESTDIR support.

New in 0.2.5:
* Take years from CVS/Entries as is, without "rolling century" logic

New in 0.2.4:
* Fix warning in "cvsdo add"
* Fix ChangeLog processing in "cvsdo diff"
* "cvsdo diff" omits diff header for unchanged files now
* Don't rely on words in timestamps, CVS is knows to mangle them