Added code formatting script.

scripts/format_code.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+ASTYLE=`which astyle`
+
+if [ ! -x $ASTYLE ];
+then
+  echo "No astyle found in path, please install."
+  exit 1
+fi
+
+if [ $# -le 0 ]; then
+  echo "Usage:"
+  echo "\t$0 <file1> [<file2> ...]"
+#  echo "\t$0 -r <directory>"
+  exit 2
+fi
+
+$ASTYLE --lineend=linux --mode=c --indent=force-tab=4 --brackets=linux \
+				--indent-switches --indent-cases --indent-preprocessor \
+				--indent-col1-comments --delete-empty-lines --break-closing-brackets \
+				--break-elseifs --align-pointer=name --indent-labels --brackets=break \
+				--unpad-paren $@
+exit $?