From Axel and Bertrand:

- cygpath.h contain code to map a full cygwin path to a Win path
- in rootcint, rlibmap and rmkdepend use cygpath.h
this should fix win builds with the new make environment.


git-svn-id: http://root.cern.ch/svn/root/trunk@36818 27541ba8-7e3a-0410-8455-c3a389f83636