Tweak liboath ./configure help text for consistency

Was:

  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
  --with-sysroot=DIR Search for dependent libraries within DIR
                        (or the compiler's sysroot if not specified).
  --without-libproxy      Build without libproxy library [default=auto]
  --without-stoken        Build without libstoken library [default=auto]
  --without-liboath       Build without liboath library (default: test)

Now:

  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
  --with-sysroot=DIR Search for dependent libraries within DIR
                        (or the compiler's sysroot if not specified).
  --without-libproxy      Build without libproxy library [default=auto]
  --without-stoken        Build without libstoken library [default=auto]
  --without-liboath       Build without liboath library [default=auto]

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

configure.ac

@@ -506,7 +506,7 @@ AS_IF([test "x$with_stoken" != "xno"], [
 
 AC_ARG_WITH([liboath],
 	AS_HELP_STRING([--without-liboath],
-		[Build without liboath library (default: test)]))
+	[Build without liboath library [default=auto]]))
 AS_IF([test "x$with_liboath" != "xno"], [
 	PKG_CHECK_MODULES(LIBOATH, liboath,
 		[AC_SUBST(LIBOATH_PC, liboath)