Added Makefile for unit tests.

In the base directory:

~$ make check-octave

will trigger the testsuite with Octave, and

~$ make check-octave

triggers the same testsuite with Matlab.

Makefile

+OCTAVE=octave-cli
+MATLAB=`which matlab`
+
+all: check-octave check-matlab
+
+check-octave:
+	@cd tests ;\
+	$(OCTAVE) --no-init-file --silent --no-history runalltests.m
+
+check-matlab:
+	@$(MATLAB)  -nosplash -nodisplay -r "cd tests; runalltests; quit"

tests/runalltests.m

@@ -27,6 +27,10 @@ catch
     initialize_dates_toolbox;
 end
 
+if isoctave
+    more off
+end
+
 tmp = dates_src_root;
 tmp = tmp(1:end-1); % Remove trailing slash.
 run_unitary_tests_in_directory(tmp);