guile 1.6.6 won't build on HP/UX

[Bruce Korb]

snarf-check-and-output-texi hangs forever:

creating guile
cat alist.doc arbiters.doc async.doc backtrace.doc boolean.doc chars.doc \
 continuations.doc debug.doc dynl.doc dynwind.doc environments.doc eq.doc \
 error.doc eval.doc evalext.doc extensions.doc feature.doc fluids.doc \
 fports.doc gc.doc goops.docgsubr.doc guardians.doc hash.doc hashtab.doc \
 hooks.doc init.doc ioext.doc iselect.doc keywords.doc lang.doc list.doc \
 load.doc macros.doc mallocs.doc modules.doc numbers.doc objects.doc \
 objprop.doc options.doc pairs.doc ports.doc print.doc procprop.doc \
 procs.doc properties.doc random.doc rdelim.doc read.doc root.doc \
 rw.docscmsigs.doc script.doc simpos.doc smob.doc sort.doc srcprop.doc \
 stackchk.doc stacks.doc stime.doc strings.doc strop.doc strorder.doc \
 strports.doc struct.doc symbols.doc throw.doc values.doc variable.doc \
 vectors.doc version.doc vports.doc weaks.doc symbols-deprecated.doc \
 ramap.doc unif.doc filesys.doc posix.doc net_db.doc socket.doc \
 regex-posix.doc | \
 GUILE="/home/bkorb/tools/guile/guile-1.6.6/_hp/pre-inst-guile" \
 ../../scripts/snarf-check-and-output-texi --manual > guile.texi || \
 { rm guile.texi; false; }