Added gemspec to be able to bundle install from git.

Added IplImage#smoothness that returns :smooth, :messy, or :blank.
Rake compile will now compile the C extension code.

ext/opencv/curve.h

@@ -0,0 +1,34 @@
+/************************************************************
+
+   curve.h -
+
+   $Author: lsxi $
+
+   Copyright (C) 2005-2006 Masakazu Yonekura
+
+************************************************************/
+#ifndef RUBY_OPENCV_CVSEQ_CURVE_H
+#define RUBY_OPENCV_CVSEQ_CURVE_H
+
+#include"opencv.h"
+
+#define __NAMESPACE_BEGIN_CURVE namespace mCurve{
+#define __NAMESPACE_END_CURVE }
+
+__NAMESPACE_BEGIN_OPENCV
+__NAMESPACE_BEGIN_CURVE
+
+VALUE rb_module();
+
+void define_ruby_module();
+
+VALUE rb_closed_q(VALUE self);
+VALUE rb_convex_q(VALUE self);
+VALUE rb_hole_q(VALUE self);
+VALUE rb_simple_q(VALUE self);
+VALUE rb_arc_length(int argc, VALUE *argv, VALUE self);
+
+__NAMESPACE_END_CURVE
+__NAMESPACE_END_OPENCV
+
+#endif // RUBY_OPENCV_CVSEQ_CURVE_H