implement the first _real_ unit-tests, testing the results for correctness instead

of just checking compilation.

Fix the many issues discovered by these unit-tests, by the way fixing a performance bug.

test/CMakeLists.txt

@@ -6,9 +6,7 @@ INCLUDE_DIRECTORIES( ${QT_INCLUDE_DIR} )
 
 SET(test_SRCS
   main.cpp
-  vectorops.cpp
-  matrixops.cpp
-  matrixmanip.cpp
+  basicstuff.cpp
 )
 QT4_AUTOMOC(${test_SRCS})