- add optimizations for trivial constructors to array types

- add initializing constructors to matix<> and vector<>
  usage: matrix<double> m(3,3,5.0); vector<double> v(3,5.0);
- avoid constructor call for std::complex<T>, user can specialize
  detail::has_trivial_constructor<T> to control this behavior


[SVN r37209]

libs/numeric/ublas

@@ -1 +1 @@
-Subproject commit dd61d4e5be0c7472a397683477b0d5220cfcc95b
+Subproject commit 46dea3c416715736c267f4d022deb7b24fd07fbd