changed my code style to be more in line with eminence's (and PEP 7), added GPL notice

src/iterate.c

@@ -1,3 +1,20 @@
+/* 
+ * This file is part of the Minecraft Overviewer.
+ *
+ * Minecraft Overviewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Minecraft Overviewer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with the Overviewer.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "overviewer.h"
 
 #include <numpy/arrayobject.h>
@@ -12,17 +29,18 @@ static inline int isTransparent(unsigned char b) {
 }
 
 // helper to handle alpha_over calls involving a texture tuple
-static inline PyObject* texture_alpha_over(PyObject* dest, PyObject* t, int imgx, int imgy)
+static inline PyObject *
+texture_alpha_over(PyObject *dest, PyObject *t, int imgx, int imgy)
 {
-	PyObject* src, * mask;
-	
-	src = PyTuple_GET_ITEM(t, 0);
-	mask = PyTuple_GET_ITEM(t, 1);
-	if (mask == Py_None) {
-		mask = src;
-	}
-	
-	return alpha_over(dest, src, mask, imgx, imgy, 0, 0);
+    PyObject* src, * mask;
+
+    src = PyTuple_GET_ITEM(t, 0);
+    mask = PyTuple_GET_ITEM(t, 1);
+    if (mask == Py_None) {
+        mask = src;
+    }
+
+    return alpha_over(dest, src, mask, imgx, imgy, 0, 0);
 }
 
 // TODO triple check this to make sure reference counting is correct