Commented Issue: Cannot run unit tests on Linux (Debian) [40]

@ rvision 294

Mono JIT compiler version 3.2.8 (mono-3.2.8/b1e8599
R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"

RDotNet.CharacterVectorTest.TestCharacter:
SetUp : RDotNet.EvaluationException : Unable to retrieve an R error message. Evaluating 'geterrmessage()' fails. The R engine is not in a working state.

```
at RDotNet.REngine.get_LastErrorMessage () [0x00000] in <filename unknown>:0
at RDotNet.REngine.Parse (System.String statement, System.Text.StringBuilder incompleteStatement) [0x00000] in <filename unknown>:0
at RDotNet.REngine+<Defer>c__Iterator0.MoveNext () [0x00000] in <filename unknown>:0
at System.Linq.Enumerable.Last[SymbolicExpression] (IEnumerable`1 source, System.Func`2 predicate, Fallback fallback) [0x00000] in <filename unknown>:0
at System.Linq.Enumerable.LastOrDefault[SymbolicExpression] (IEnumerable`1 source) [0x00000] in <filename unknown>:0
at RDotNet.REngine.Evaluate (System.String statement) [0x00000] in <filename unknown>:0
at RDotNet.RDotNetTestFixture.SetUpTest () [0x00000] in <filename unknown>:0
```

Also, the terminal shows: Error: C stack usage is too close to the limit

Also crashes:
```
nunit-console4 src/codeplex/rdotnet/RDotNet.Tests/bin/Debug/RDotNet.Tests.dll
```

Comments: Some progress, now that I know how the C stack checking can be disabled on Linux (which was different from on Windows).