The headers in the current eigen 3.3.7-1 package are broken.

I'm not exactly sure what the problem is but trying to use eigen results in compile errors like this one:

```
/usr/include/eigen3/Eigen/src/Geometry/Quaternion.h:484:26: error: invalid operands to binary expression ('const float' and 'Eigen::QuaternionBase<Eigen::Quaternion<float, 0> >::Vector3' (aka 'Matrix<float, 3, 1>'))
return v + this->w() * uv + this->vec().cross(uv);
~~~~~~~~~ ^ ~~
```

Simply rebuilding the package with no changes to the PKGBUILD fixes all issues (and increases the installed size a bit).

Package (1) Old Version New Version Net Change
eigen 3.3.7-1 3.3.7-1 0.30 MiB