…for struct. This needs to be calculated in semcheck. This is a WIP and a SMOP.
… nice and complex test for structs and arrays combined.
…ions, so they get an m1_var node. Also fix code with dimension handling in complex situatios such as x.y.z = 42.
…ortantly fix the todo of getting number of elements in a particular dimension, to correctly access arrays. Also allow struct members to be arrays.