1) Implement nsDirectoryService. This makes the service extensible so that
components can do delayed registration.
2) Fixes windows Append meathod which did not work with . prepended files.
3) Fixes memory leaks in nsDirectoryService
4) Fixes SetPermissions() on Win32. This was in my tree for a while. It basically
calls through to chmod just like on unix.
5) Fixes GetModificationDate. Win32 now return PRTime for dates.
r = scc, valeski, warren, wtc (suggestions)
a = jevering
Fixes bug 25028.
Added new dirty flag so that resolutions can be purged.
checked in VC5 fix from pollmann and jband
checked in fix from colin@theblakes.com for VMS.
r= valeski, pollmann, colin@theblakes
dougt%netscape.com
pollmann%netscape.com