I need to add an include path for sdlew

I get unable to find ‘X11/Xlib.h’ when building sdlew

Adding X11_X11_INCLUDE_PATH is a workable fix for me.

+++ b/extern/sdlew/CMakeLists.txt
@@ -7,7 +7,7 @@ set(INC

Any objections to adding this include path?

Can you create a pull request for this and other FreeBSD fixes?

That’s the easiest way to get it reviewed, tested on the buildbot, properly attributed, etc. It can just be a single pull request with everything included.