Fixes #539.

* AUTHORS: Update by indicating the status of each contributor.
* Makefile.am, bench/Makefile.am, bench/dtgbasat/Makefile.am,
bench/dtgbasat/gen.py, bench/emptchk/Makefile.am,
bench/emptchk/defs.in, bench/ltl2tgba/Makefile.am,
bench/ltl2tgba/defs.in, bench/ltl2tgba/sum.py,
bench/ltlclasses/Makefile.am, bench/ltlcounter/Makefile.am,
bench/spin13/Makefile.am, bench/stutter/Makefile.am,
bench/stutter/stutter_invariance_formulas.cc,
bench/stutter/stutter_invariance_randomgraph.cc,
bench/wdba/Makefile.am, bin/Makefile.am, bin/autcross.cc,
bin/autfilt.cc, bin/common_aoutput.cc, bin/common_aoutput.hh,
bin/common_color.cc, bin/common_color.hh, bin/common_conv.cc,
bin/common_conv.hh, bin/common_cout.cc, bin/common_cout.hh,
bin/common_file.cc, bin/common_file.hh, bin/common_finput.cc,
bin/common_finput.hh, bin/common_hoaread.cc, bin/common_hoaread.hh,
bin/common_output.cc, bin/common_output.hh, bin/common_post.cc,
bin/common_post.hh, bin/...