Replace guards by pragma once.

* iface/ltsmin/ltsmin.hh, src/bin/common_aoutput.hh,
src/bin/common_conv.hh, src/bin/common_cout.hh,
src/bin/common_file.hh, src/bin/common_finput.hh,
src/bin/common_output.hh, src/bin/common_post.hh,
src/bin/common_r.hh, src/bin/common_range.hh,
src/bin/common_setup.hh, src/bin/common_sys.hh,
src/bin/common_trans.hh, src/dstarparse/parsedecl.hh,
src/dstarparse/public.hh, src/graph/graph.hh,
src/graph/ngraph.hh, src/hoaparse/parsedecl.hh,
src/hoaparse/public.hh, src/kripke/fairkripke.hh,
src/kripke/fwd.hh, src/kripke/kripke.hh,
src/kripke/kripkeexplicit.hh, src/kripke/kripkeprint.hh,
src/kripkeparse/parsedecl.hh, src/kripkeparse/public.hh,
src/ltlast/allnodes.hh, src/ltlast/atomic_prop.hh,
src/ltlast/binop.hh, src/ltlast/bunop.hh,
src/ltlast/constant.hh, src/ltlast/formula.hh,
src/ltlast/multop.hh, src/ltlast/predecl.hh,
src/ltlast/unop.hh, src/ltlast/visitor.hh,
src/ltlenv/declenv.hh, src/ltlenv/defaultenv.hh,
src/ltlenv/environment.hh, src/ltlparse/parsedecl.hh,
src/ltlparse/public.hh, src/ltlvisit/apcollect.hh,
src/ltlvisit/clone.hh, src/ltlvisit/contain.hh,
src/ltlvisit/dotty.hh, src/ltlvisit/dump.hh,
src/ltlvisit/lbt.hh, src/ltlvisit/length.hh,
src/ltlvisit/lunabbrev.hh, src/ltlvisit/mark.hh,
src/ltlvisit/mutation.hh, src/ltlvisit/nenoform.hh,
src/ltlvisit/postfix.hh, src/ltlvisit/randomltl.hh,
src/ltlvisit/relabel.hh, src/ltlvisit/remove_x.hh,
src/ltlvisit/simpfg.hh, src/ltlvisit/simplify.hh,
src/ltlvisit/snf.hh, src/ltlvisit/tostring.hh,
src/ltlvisit/tunabbrev.hh, src/ltlvisit/wmunabbrev.hh,
src/misc/bareword.hh, src/misc/bddlt.hh, src/misc/bitvect.hh,
src/misc/casts.hh, src/misc/common.hh, src/misc/escape.hh,
src/misc/fixpool.hh, src/misc/formater.hh, src/misc/hash.hh,
src/misc/hashfunc.hh, src/misc/intvcmp2.hh,
src/misc/intvcomp.hh, src/misc/location.hh, src/misc/ltstr.hh,
src/misc/memusage.hh, src/misc/minato.hh, src/misc/mspool.hh,
src/misc/optionmap.hh, src/misc/position.hh, src/misc/random.hh,
src/misc/satsolver.hh, src/misc/timer.hh, src/misc/tmpfile.hh,
src/misc/version.hh, src/priv/accmap.hh, src/priv/bddalloc.hh,
src/priv/freelist.hh, src/ta/ta.hh, src/ta/taexplicit.hh,
src/ta/taproduct.hh, src/ta/tgta.hh, src/ta/tgtaexplicit.hh,
src/ta/tgtaproduct.hh, src/taalgos/dotty.hh,
src/taalgos/emptinessta.hh, src/taalgos/minimize.hh,
src/taalgos/reachiter.hh, src/taalgos/statessetbuilder.hh,
src/taalgos/stats.hh, src/taalgos/tgba2ta.hh,
src/tgba/acc.hh, src/tgba/bdddict.hh,
src/tgba/bddprint.hh, src/tgba/formula2bdd.hh, src/tgba/fwd.hh,
src/tgba/taatgba.hh, src/tgba/tgba.hh, src/tgba/tgbagraph.hh,
src/tgba/tgbamask.hh, src/tgba/tgbaproduct.hh, src/tgba/tgbaproxy.hh,
src/tgba/tgbasafracomplement.hh, src/tgbaalgos/are_isomorphic.hh,
src/tgbaalgos/bfssteps.hh, src/tgbaalgos/canonicalize.hh,
src/tgbaalgos/cleanacc.hh, src/tgbaalgos/complete.hh,
src/tgbaalgos/compsusp.hh, src/tgbaalgos/cycles.hh,
src/tgbaalgos/degen.hh, src/tgbaalgos/dotty.hh,
src/tgbaalgos/dtbasat.hh, src/tgbaalgos/dtgbacomp.hh,
src/tgbaalgos/dtgbasat.hh, src/tgbaalgos/dupexp.hh,
src/tgbaalgos/emptiness.hh, src/tgbaalgos/emptiness_stats.hh,
src/tgbaalgos/gtec/ce.hh, src/tgbaalgos/gtec/gtec.hh,
src/tgbaalgos/gtec/sccstack.hh, src/tgbaalgos/gtec/status.hh,
src/tgbaalgos/gv04.hh, src/tgbaalgos/hoa.hh, src/tgbaalgos/isdet.hh,
src/tgbaalgos/isweakscc.hh, src/tgbaalgos/lbtt.hh,
src/tgbaalgos/ltl2taa.hh, src/tgbaalgos/ltl2tgba_fm.hh,
src/tgbaalgos/magic.hh, src/tgbaalgos/mask.hh,
src/tgbaalgos/minimize.hh, src/tgbaalgos/neverclaim.hh,
src/tgbaalgos/postproc.hh, src/tgbaalgos/powerset.hh,
src/tgbaalgos/product.hh, src/tgbaalgos/projrun.hh,
src/tgbaalgos/randomgraph.hh, src/tgbaalgos/randomize.hh,
src/tgbaalgos/reachiter.hh, src/tgbaalgos/reducerun.hh,
src/tgbaalgos/relabel.hh, src/tgbaalgos/remfin.hh,
src/tgbaalgos/replayrun.hh, src/tgbaalgos/safety.hh,
src/tgbaalgos/sbacc.hh, src/tgbaalgos/scc.hh,
src/tgbaalgos/sccfilter.hh, src/tgbaalgos/sccinfo.hh,
src/tgbaalgos/se05.hh, src/tgbaalgos/simulation.hh,
src/tgbaalgos/stats.hh, src/tgbaalgos/stripacc.hh,
src/tgbaalgos/stutter.hh, src/tgbaalgos/tau03.hh,
src/tgbaalgos/tau03opt.hh, src/tgbaalgos/translate.hh,
src/tgbaalgos/weight.hh, src/tgbaalgos/word.hh,
src/sanity/includes.test, src/tgbaalgos/ndfs_result.hxx: here.

src/sanity/includes.test

@@ -34,14 +34,13 @@ for file in `find "$INCDIR" \( -name "${1-*}.hh" \
                                -o -name "${1-*}.hxx" \) \
                   -a -type f -a -print | sed "s,$INCDIR/,,g"`; do
 
-   b=`echo "$file" | tr '[/.a-z]' '[__A-Z]'`
-   if grep "[	 ]*#.*def.* SPOT_$b\$" "$INCDIR/$file" >/dev/null; then
+   if head -n 100 "$INCDIR/$file" | grep -q "[	 ]*#.*pragma.* once\$"; then
      :
-   elif grep 'GNU Bison 2\.6' "$INCDIR/$file" >/dev/null; then
+   elif grep -q 'GNU Bison 2\.6' "$INCDIR/$file"; then
      # Bison 2.6, 2.6.1, 2.6.2 have a bug where position.hh
      # include <iosfwd> instead of <iostream>.
      continue
-   elif grep 'GNU Bison' "$INCDIR/$file" >/dev/null; then
+   elif grep -q 'GNU Bison' "$INCDIR/$file"; then
      :
    else
      echo "Missing, or incorrect include guard." >&2
@@ -49,24 +48,7 @@ for file in `find "$INCDIR" \( -name "${1-*}.hh" \
      echo "  $file" >> failures
      continue
    fi
-
-   cat >incltest.cc <<EOF
-// Include the file twice, so we detect missing inclusion guards.
-#include <$file>
-#include <$file>
-EOF
-
-   case $file in
-    *bin/*) MOREFLAGS="-I $TOPBUILD/lib/ -I $INCDIR/../lib/ -I $TOPBUILD";;
-    *) MOREFLAGS=;;
-   esac
-
-   if $CXX $MOREFLAGS $CPPFLAGS -DSKIP_DEPRECATED_WARNING $CXXFLAGS -c incltest.cc; then
-      echo "PASS: $file"
-   else
-      echo "FAIL: $file"
-      echo "  $file" >> failures
-   fi
+   echo "PASS: $file"
 done
 
 if test -f failures; then