Fix for Windows

git-svn-id: http://root.cern.ch/svn/root/trunk@27522 27541ba8-7e3a-0410-8455-c3a389f83636

cint/setenv.sh

-export PATH=$PWD/bin:$PATH; export LD_LIBRARY_PATH=$PWD/lib:$LD_LIBRARY_PATH; export CINTSYSDIR=$PWD
+export PATH=$PWD/bin:$PATH
+export LD_LIBRARY_PATH=$PWD/lib:$LD_LIBRARY_PATH
+if uname | grep CYGWIN > /dev/null; then
+	export CINTSYSDIR=`cygpath -m $PWD`
+else
+	export CINTSYSDIR=$PWD
+fi