Elevated powerline

[poppo]

I want to use elevated powerline.
But there are some problems with previous simutrans.

I fix some bugs with building and removing elevated powerline!elevated_powerline.patch

If you want to test this patch, you must add elevated powerline pakfile and edit menuconf:

Code Select Expand

toolbar[m][n]=ways(128,1)↑m,n depend on your pakset/menubar

[prissi]

Thank you, added (with slight modifications) in r11866.