Add support for IN variables in EXPECT statements

[Rune-Christensen]

A statement like this:

EXPECT A IN B TO BE NUMERIC 5

Will generate a statement like this:

MOVE A TO UT-EXPECTED

Which will fail during compile, if A is defined multiple times in ws.

The correct generated statement would be:

MOVE A IN B TO UT-EXPECTED

[Rune-Christensen]

This issue is fixed in my own fork.