correctly initialize display with orientation

This initializes the display framebuffer according to how it is mounted. And removes workaround in ctx for the global flipped coordinate system. This Fixes #62 (closed) and likely improve performance of texture sampling if increasing linear memory access patterns are preferable.

components/ctx/ctx.h

@@ -53640,7 +53640,7 @@ ctx_draw_texture_clipped  (Ctx *ctx, const char *eid,
     {
       ctx_rectangle (ctx, x, y, width, height);
       ctx_save (ctx);
-      ctx_texture (ctx, eid, -x, -y);// / 
+      ctx_texture (ctx, eid, x, y);
       ctx_scale (ctx, (width/tex_width), (height/tex_height));
       ctx_fill (ctx);
       ctx_restore (ctx);