1.  Literal to vector assignment (no explicit conversion should be used)
2.  Non-vector temporary variable to vector assignment (no explicit conversion)
3.  Vector-temporary to vector variable assignment (explicit conversion)

Previously, only vector to vector assignment was tested.

now counting lid_strides, gid_strides, and variable name in LocalMemAccessCounter; updated tests accordingly

in order to get around the vector iname conditional issue, we have to fix this parameter before generating the kernel