URL of sparse homepage is now printed in case sparse was not found.

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@761 d57e44dd-8a1f-0410-8b47-8ef2f437770f

scripts/run-regression-tests

@@ -509,6 +509,7 @@ fi
 
 if [ "$(type -p sparse)" = "" ]; then
   echo "Error: sparse has not yet been installed."
+  echo "See also http://www.kernel.org/pub/software/devel/sparse/."
 fi
 
 if ! mkdir -p "${outputdir}"; then