tests/invalid/Mmakefile:
Add type_error_use_module to list of REDIRECT_OPT_ERROR_MODULES
as it produces error messages while making the .opt file.
tests/invalid/multiply_star.m:
Add description of .err_exp files.
tests/invalid/multiply_star.err_exp:
Update line numbers.
tests/invalid/multiply_star.err_exp2:
Add expected error output when compiling with intermodule
optimisation.