fix include/RVersion.h to ${incdir}/RVersion.h.

git-svn-id: http://root.cern.ch/svn/root/trunk@3813 27541ba8-7e3a-0410-8455-c3a389f83636

config/root-config.in

@@ -359,7 +359,7 @@ while test $# -gt 0; do
     --version)
       ### Output the version number.  If RVersion.h can not be found, give up.
       if test -r ${incdir}/RVersion.h; then
-         out="$out `sed -n 's,.*ROOT_RELEASE *\"\(.*\)\".*,\1,p' < include/RVersion.h`"
+         out="$out `sed -n 's,.*ROOT_RELEASE *\"\(.*\)\".*,\1,p' < ${incdir}/RVersion.h`"
       else
          echo "cannot read ${incdir}/RVersion.h"
          exit 1