allow constructing Transform from small-matrix (like fromPosOrientScale but with trivial Pos and Scale)
allow constructing Transform from small-matrix (like fromPosOrientScale
but with trivial Pos and Scale)

ROCmSoftwarePlatform/hipeigen,pasuka/eigen,toastedcrumpets/eigen,ROCmSoftwarePlatform/hipeigen,cjntaylor/eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,madlib/eigen,pasuka/eigen,TSC21/Eigen,toastedcrumpets/eigen,pthulhu/eigen,TSC21/Eigen,madlib/eigen,ritsu1228/eigen,cjntaylor/eigen,ritsu1228/eigen,ritsu1228/eigen,pasuka/eigen,madlib/eigen,pthulhu/eigen,pthulhu/eigen,TSC21/Eigen,ritsu1228/eigen,pthulhu/eigen,Zefz/eigen,cjntaylor/eigen,toastedcrumpets/eigen,ROCmSoftwarePlatform/hipeigen,Zefz/eigen,pasuka/eigen,cjntaylor/eigen,Zefz/eigen,TSC21/Eigen,madlib/eigen,toastedcrumpets/eigen,Zefz/eigen,pthulhu/eigen,pasuka/eigen