Clean up julia 0.6 constructor syntax for SMatrix.jl (#724)

Author: githubtomtom

src/SMatrix.jl

@@ -16,7 +16,7 @@ unknown to the compiler (the element type may optionally also be specified).
 """
 const SMatrix{S1, S2, T, L} = SArray{Tuple{S1, S2}, T, 2, L}
 
-@generated function (::Type{SMatrix{S1}})(x::NTuple{L,Any}) where {S1,L}
+@generated function SMatrix{S1}(x::NTuple{L,Any}) where {S1,L}
     S2 = div(L, S1)
     if S1*S2 != L
         throw(DimensionMismatch("Incorrect matrix sizes. $S1 does not divide $L elements"))
@@ -29,23 +29,23 @@ const SMatrix{S1, S2, T, L} = SArray{Tuple{S1, S2}, T, 2, L}
     end
 end
 
-@generated function (::Type{SMatrix{S1,S2}})(x::NTuple{L,Any}) where {S1,S2,L}
+@generated function SMatrix{S1,S2}(x::NTuple{L,Any}) where {S1,S2,L}
     return quote
         $(Expr(:meta, :inline))
         T = promote_tuple_eltype(typeof(x))
         SMatrix{S1, S2, T, L}(x)
     end
 end
 SMatrixNoType{S1, S2, L, T} = SMatrix{S1, S2, T, L}
-@generated function (::Type{SMatrixNoType{S1, S2, L}})(x::NTuple{L,Any}) where {S1,S2,L}
+@generated function SMatrixNoType{S1, S2, L}(x::NTuple{L,Any}) where {S1,S2,L}
     return quote
         $(Expr(:meta, :inline))
         T = promote_tuple_eltype(typeof(x))
         SMatrix{S1, S2, T, L}(x)
     end
 end
 
-@generated function (::Type{SMatrix{S1,S2,T}})(x::NTuple{L,Any}) where {S1,S2,T,L}
+@generated function SMatrix{S1,S2,T}(x::NTuple{L,Any}) where {S1,S2,T,L}
     return quote
         $(Expr(:meta, :inline))
         SMatrix{S1, S2, T, L}(x)