apply some coding style with astyle

.astylerc

@@ -0,0 +1,15 @@
+--mode=c
+
+--style=bsd # brackets on their own line
+
+--indent=tab # tabs for indentation, spaces for alignment
+
+--min-conditional-indent=0 # align continuation lines to the opening bracket
+
+--max-instatement-indent=80 # allow to use a lot of spaces for alignment
+
+--pad-oper # operators + have - spaces
+
+--pad-first-paren-out # space before (
+
+--align-pointer=name # char *name