Fix transparent ground problem
( http://forum.simutrans.com/index.php?topic=10637.msg122955#msg122955 )

git-svn-id: https://simutrans.svn.sourceforge.net/svnroot/simutrans/pak128@1273 e96eaf88-093e-0410-925f-862d53288611
Makefile fixes by Kieron
( http://forum.simutrans.com/index.php?topic=12418.msg122825#msg122825 )

git-svn-id: https://simutrans.svn.sourceforge.net/svnroot/simutrans/pak128@1274 e96eaf88-093e-0410-925f-862d53288611
scenario cars: add hyperlinks to map positions

git-svn-id: https://simutrans.svn.sourceforge.net/svnroot/simutrans/pak128@1278 e96eaf88-093e-0410-925f-862d53288611
scenario scripts: no local variables in global scope

git-svn-id: https://simutrans.svn.sourceforge.net/svnroot/simutrans/pak128@1279 e96eaf88-093e-0410-925f-862d53288611
scenario sell-cloting: forbid terraforming across sea too

git-svn-id: https://simutrans.svn.sourceforge.net/svnroot/simutrans/pak128@1280 e96eaf88-093e-0410-925f-862d53288611