A bug was introduced in with commit 5727. Restoretree and restore were

after that commit using a subroutine in pages to determine if a path was
a win32 path.  The restore class was sending "/c:/" and restoretree was
sending "c:/".  The subroutine was working for "c:/"  This should fix it
and should also resolve the performance issue.  I'm a little concerned
because I love regexes that maybe a regex would be better, but I'll try
this for a bit to see if all works correctly.