by hard coding it in the #includes<> inside the test files. This way it
makes it clear in the test files which headers come from CGAL, and which
come from the test-suite.
- a by product of this is that we can use the default makefiles, and so I
added "makefile" to dont_submit.
- I added "-I../../H2/include" and similar in the makefiles, so that we can
work more easily with our working copies (didn't you find it painful to
have to tweak the makefiles for each submission ?).
- Fixes a buffer overflow which made SunPro 5.3 fail at run time.
