change C++ comment to C comment
add missing includes; fix "missing braces" warning
tst_dup doesn't need aldor_gloop
fix test reference output files
added some documentation on the build process
add index file for documentation
minor makefile cleanups

- check_PROGRAMS, CLEANFILES, and TESTS are common to all test-makefiles,
  so we put them into testprog.am
syntax highlighting in build documentation
Merge pull request #99 from pippijn/pvs/devel

Pvs/devel