[0035] Mat/vec multiply operations don't need a scope template parameter

[pow2clk]

Which proposal does this relate to?
0035 - Linear Algebra Matrix

Describe the issue or outstanding question.
The Multiply and MultiplyAdd functions that take matrices and vectors also take a scope template parameter even though they are only supported on thread scope.

template <typename OutputElTy, typename InputElTy, SIZE_TYPE M, SIZE_TYPE K,
          ComponentEnum MatrixDT, MatrixScopeEnum Scope>
vector<OutputElTy, M> Multiply(Matrix<MatrixDT, M, K, MatrixUse::A, Scope>,
                               vector<InputElTy, K>);

template <typename OutputElTy, typename InputElTy, typename BiasElTy,
          SIZE_TYPE M, SIZE_TYPE K, ComponentEnum MatrixDT,
          MatrixScopeEnum Scope>
vector<OutputElTy, M> MultiplyAdd(Matrix<MatrixDT, M, K, MatrixUse::A, Scope>,
                                  vector<InputElTy, K>, vector<BiasElTy, M>);

template <typename OutputElTy, typename InputElTy, ComponentEnum InputInterp,
          typename BiasElTy, SIZE_TYPE M, SIZE_TYPE VecM, SIZE_TYPE K,
          ComponentEnum MatrixDT, MatrixScopeEnum Scope>
typename hlsl::enable_if<
    InterpretedVector<InputElTy, VecM, InputInterp>::Size == M,
    vector<OutputElTy, K> >::type
    MultiplyAdd(Matrix<MatrixDT, M, K, MatrixUse::A, Scope>,
                InterpretedVector<InputElTy, VecM, InputInterp>,
                vector<BiasElTy, K>);

This allows usage of these with matrices of disallowed scopes.

#741 added corresponding functions for interpretedvector and vectorrefs that made the scope explicit.