+ bugfix in btAlignedObjectArray, not calling destructors on resize to smaller array.

Thanks Benoit for pointing this out, and bugfix: http://code.google.com/p/bullet/issues/detail?id=218

+ Added point to point, hinge, slider and generic 6dof constraints to Maya Dynamica plugin
Thanks to Herbert Law for the constribution: http://code.google.com/p/bullet/issues/detail?id=221

Extras/MayaPlugin/constraint/dSliderConstraintCmd.h

@@ -0,0 +1,58 @@
+/*
+Bullet Continuous Collision Detection and Physics Library Maya Plugin
+Copyright (c) 2008 Herbert Law
+ 
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising
+from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+ 
+1. The origin of this software must not be misrepresented; you must
+not claim that you wrote the original software. If you use this
+software in a product, an acknowledgment in the product documentation
+would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must
+not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+ 
+Written by: Herbert Law <Herbert.Law@gmail.com>
+*/
+
+//dSliderConstraintCmd.h
+
+#ifndef DYN_SLIDER_CONSTRAINT_CMD_H
+#define DYN_SLIDER_CONSTRAINT_CMD_H
+
+#include <maya/MArgDatabase.h>
+#include <maya/MDagModifier.h>
+#include <maya/MSelectionList.h>
+
+#include <maya/MPxCommand.h>
+
+class dSliderConstraintCmd : public MPxCommand
+{
+public:
+    dSliderConstraintCmd();
+    virtual ~dSliderConstraintCmd();
+
+    static void *creator();
+    static MSyntax syntax();
+
+    MStatus doIt(const MArgList &i_mArgList);
+    MStatus redoIt();
+    MStatus undoIt();
+    bool isUndoable() const { return true; }
+    bool hasSyntax() const { return true; }
+
+    static MString typeName;
+
+protected:
+    MArgDatabase *m_argDatabase;
+    MDagModifier *m_dagModifier;
+
+    MSelectionList m_undoSelectionList; 
+};
+
+#endif //DYN_SLIDER_CONSTRAINT_CMD_H