Merge branch 'bugfix-testtargets' into 'master'

Add testHelper_DisconnectedMatrix to TESTTARGETS to make sure it is deleted upon `make clean`

See merge request !1

tests/Makefile

@@ -50,7 +50,7 @@ test_MatchATA \
 test_CoarsenGraph test_RunMLGraphPart \
 test_SparseMatrixToCRS_CCS test_DetectConnectedComponents \
 test_Heap test_TwoColorTree test_SubsetSum test_ZeroVolumeSearch \
-test_FreeNonzeros
+test_FreeNonzeros testHelper_DisconnectedMatrix
 
 .SECONDARY: ${TESTTARGETS:%=%.o}