Check only /usr/bin/hostinfo, not any `hostinfo'

[Noah Misch]

A popular Windows development tool adds its Program Files directory to $PATH,
and in that directory is a `hostinfo.exe'.  `configure' runs on such systems
invoke that program and then hang until the user closes it.

My web search suggests that hostinfo is mainly a Mach/NeXT/Mac OS X thing, and
is /usr/bin/hostinfo there, so this patch moves to testing only that file.  Does
anyone know of another location we ought to try?

2005-01-16  Noah Misch  <address@hidden>

        * lib/m4sugar/m4sh.m4 (AS_UNAME): Try only /usr/bin/hostinfo, not any
        `hostinfo' in $PATH.

diff -urp -X dontdiff ac-clean/lib/m4sugar/m4sh.m4 
ac-hostinfo/lib/m4sugar/m4sh.m4
--- ac-clean/lib/m4sugar/m4sh.m4        2005-01-04 09:15:51.000000000 -0500
+++ ac-hostinfo/lib/m4sugar/m4sh.m4     2005-01-16 17:59:28.379469961 -0500
@@ -985,7 +985,7 @@ uname -v = `(uname -v) 2>/dev/null || ec
 /bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
 /usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
 /usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
-hostinfo               = `(hostinfo) 2>/dev/null               || echo unknown`
+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`
 /bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
 /usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
 /bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`