A fix for SDL for mingw windows compiling.

[Chase-san]

You shouldn't have to put SDL/SDL2 in the root include directory. If your machine is setup like that, then your machine is setup wrong. At least for mingw. MSVC puts it in the base directory by default, but they don't have to build with the Makefile.

This also fixes a few compile time bugs I stumbled across.

[kevingranade]

Compiles/runs fine on linux curses and tiles, just need someone to confirm on windows.

[Wishbringer]

It doesn't work under windows (segfault when trying to draw tiles).

[Chase-san]

Unrelated to this fix, that issue occurred before hand. I tried sorting that out, but it doesn't crash when in GDB.

[Wishbringer]

Ah, compiling... "I'm dead tired", need some sleep.

[kevingranade]

I'm pulling, this LOOKS good, and evidently Wishbrainger was able to compile, but not run, which is same as previous.

[Wishbringer]

Old news, but for the record, the problem with crashes was solved with those SDL2 specific "zlib1.dll", "freetype6.dll" and "libpng16-16.dll" files. They should be included in the future.

[Chase-san]

Confirmed. News to me..

Crash on load and crash on launch fixed by including "libpng16-16.dll" and "zlib1.dll" from sdl_image. libfreetype-6.dll has no effect on the crashing for me.

Here is a zip of the relevant dlls for inclusion. http://www.mediafire.com/download/57c2kek1amnknmj/catatiles_win32_dlls.zip

[Wishbringer]

Agreed, I just removed "libfreetype-6.dll" and it still works. No noticeable render slowdown even when fully zoomed out.