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gm_bigcity sideways

I took gm_bigcity and turned it 90 degrees. have fun.
If you run into errors, it's probably because the map isn't normally 90 degrees.

Credit to the original map creator. http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=105982362&searchtext=gm_bigcity

and thanks to http://www.reddit.com/user/TopHATTwaffle for helping to fix some problems.