Rename png.h to makepng.h, to avoid conflicts with libpng's png.h.

include/gfx/makepng.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright © 2013 stag019 <stag019@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef RGBDS_GFX_PNG_H
+#define RGBDS_GFX_PNG_H
+
+#include "gfx/main.h"
+
+void input_png_file(struct Options opts, struct PNGImage *img);
+void get_text(struct PNGImage *png);
+void set_text(struct PNGImage *png);
+void output_png_file(struct Options opts, struct PNGImage *png);
+void free_png_data(struct PNGImage *png);
+
+#endif