Add MatrixMultiplicationTest

Hello Phil,

I do not know why this *MatrixMultiplicationTest* is now passing too.

Martin

```
$ $ java -Xms4g -Xmx4g -jar Rootbeer.jar -runtest org.trifort.rootbeer.testcases.rootbeertest.kerneltemplate.MatrixMultiplicationTest

[TEST 1/1] org.trifort.rootbeer.testcases.rootbeertest.kerneltemplate.MatrixMultiplicationTest@4119b6a2
  0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
 16: ff ff ff ff ff ff ff ff 00 00 00 00 00 00 00 00 
 32: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
 48: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
 64: 03 00 00 00 ea 0d 00 00 40 00 00 00 00 00 00 00 
 80: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 
 96: 08 00 00 00 0a 00 08 00 0c 00 10 00 00 00 00 00 
112: 00 04 00 00 00 04 00 00 20 00 00 00 20 00 00 00 
128: 00 00 00 00 1a 0d 00 00 20 00 80 00 00 00 10 00 
144: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 
160: 00 00 00 00 00 00 22 40 00 00 00 00 00 00 00 40 
176: 00 00 00 00 00 00 00 40 00 00 00 00 00 00 1c 40 
192: 00 00 00 00 00 00 1c 40 00 00 00 00 00 00 22 40 
208: 00 00 00 00 00 00 22 40 00 00 00 00 00 00 18 40 
224: 00 00 00 00 00 00 18 40 00 00 00 00 00 00 20 40 
240: 00 00 00 00 00 00 20 40 00 00 00 00 00 00 18 40 
  0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
 16: ff ff ff ff ff ff ff ff 00 00 00 00 00 00 00 00 
 32: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
 48: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
 64: 03 00 00 00 ea 0d 00 00 40 00 00 00 00 00 00 00 
 80: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 
 96: 08 00 00 00 0a 00 08 00 0c 00 10 00 00 00 00 00 
112: 00 04 00 00 00 04 00 00 20 00 00 00 20 00 00 00 
128: 00 00 00 00 1a 0d 00 00 20 00 80 00 00 00 10 00 
144: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 
160: 00 00 00 00 00 00 22 40 00 00 00 00 00 00 00 40 
176: 00 00 00 00 00 00 00 40 00 00 00 00 00 00 1c 40 
192: 00 00 00 00 00 00 1c 40 00 00 00 00 00 00 22 40 
208: 00 00 00 00 00 00 22 40 00 00 00 00 00 00 18 40 
224: 00 00 00 00 00 00 18 40 00 00 00 00 00 00 20 40 
240: 00 00 00 00 00 00 20 40 00 00 00 00 00 00 18 40 
  PASSED
  Cpu time: 10127 ms
  Gpu time: 1238 ms
```