Fix test cases with error messages that include line numbers from the compiler

[Per Östlund]

I have disabled some test cases that have error messages in them which include line numbers from the compiler. This means that the test cases needs to be updated every time the corresponding source files are changed in the compiler, which is not acceptable. Internal errors should really only be used for things which shouldn't fail, and not used as failtraces.

So either the compiler needs to be fixed so it doesn't print out internal errors for these models, or the models needs to be fixed. The models are:

simulation/modelica/indexreduction/ImplicitStateCoupling.mos
simulation/libraries/3rdParty/MathematicalAspects/01_AlgebraicLoopBoolean.mos
openmodelica/typed-API/SolveLinearSystem.mos