Add test for native programs

Closes #71
Build a simple program with debugging symbols

Closes #72
Improve documention of ocaml program files
Display debug information
Remove conditional listing of obj as a usertarget
Support removal of objdir
Fix variable trandformation for the new version of BSD Make
Simplify installation logic of manual pages
Fix include invocation
Fix presentation
Add a test building an OCaml against multiple configurations

Closes #74
Add a test building a simple OCaml program with profiling information

Closes #74
Fix the test logic

The DESTDIR variable mentions ${TESTDIR}, ${ARCHITECTUREDIR},
${CONFIGURATIONDIR}, which is required because tests looks like

  test -x ${DESTDIR}${BINDIR}/wordcount
  test -f ${DESTDIR}${MANDIR}/man1/wordcount.1.gz

If DESTDIR does not mention the aforementioned variables, a test can
find files installed by some previous tests and return a false
positive.
Merge branch 'topic/test-simple-ocaml-program'