First MayaPlugin, still need to fix the makefiles and get unique ids for

the Maya nodes.
Got rid of boost dependencies.
Cleaned up mvl library

Extras/MayaPlugin/mvl/traits.h

@@ -0,0 +1,85 @@
+/*
+Bullet Continuous Collision Detection and Physics Library Maya Plugin
+Copyright (c) 2008 Walt Disney Studios
+ 
+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: Nicola Candussi <nicola@fluidinteractive.com>
+*/
+
+//traits.h
+
+#ifndef MVL_TRAITS_H
+#define MVL_TRAITS_H
+
+namespace mvl {
+
+//simple promotion for now
+
+//check if a type is a POD
+template<typename T> 
+struct isPOD { enum { value = false }; };
+template<> struct isPOD<char> { enum { value = true }; };
+template<> struct isPOD<short> { enum { value = true }; };
+template<> struct isPOD<int> { enum { value = true }; };
+template<> struct isPOD<float> { enum { value = true }; };
+template<> struct isPOD<double> { enum { value = true }; };
+template<> struct isPOD<long double> { enum { value = true }; };
+
+//
+template<bool Condition, typename T1, typename T2> struct ifThenElse { typedef T2 value_type; };
+template<typename T1, typename T2> struct ifThenElse<true, T1, T2> { typedef T1 value_type; };
+
+template<typename T1, typename T2> 
+struct promote_traits 
+{
+	typedef typename ifThenElse<isPOD<T1>::value, T2, T1>::value_type value_type;                  
+};
+
+template<typename T>                                  
+struct promote_traits<T, T>               
+{                                           
+    typedef T value_type;                  
+};                                          
+
+#define TRAITS_DEFINE_MACRO(T1, T2, TP)     \
+template<>                                  \
+struct promote_traits<T1, T2>               \
+{                                           \
+    typedef TP value_type;                  \
+};                                          \
+template<>                                  \
+struct promote_traits<T2, T1>               \
+{                                           \
+    typedef TP value_type;                  \
+};                                      
+    
+TRAITS_DEFINE_MACRO(int, float, float)
+TRAITS_DEFINE_MACRO(int, double, double)
+TRAITS_DEFINE_MACRO(int, long double, long double)
+
+TRAITS_DEFINE_MACRO(float, double, double)
+TRAITS_DEFINE_MACRO(float, long double, long double)
+
+TRAITS_DEFINE_MACRO(double, long double, long double)
+
+#undef TRAITS_DEFINE_MACRO
+
+
+} // namespace mvl 
+
+#endif
+