rollback the previous acx_pthread.m4 fix.
diff --git a/m4/acx_pthread.m4 b/m4/acx_pthread.m4
index cb1a4bb..2cf20de 100644
--- a/m4/acx_pthread.m4
+++ b/m4/acx_pthread.m4
@@ -272,11 +272,9 @@
 	   AC_TRY_LINK(,, , [done=yes])
 	
 	   if test "x$done" = xyes ; then
-	      AC_MSG_RESULT([yes])
-	      done="no"
-	   else
 	      AC_MSG_RESULT([no])
-	      done="yes"
+	   else
+	      AC_MSG_RESULT([yes])
 	   fi
 	fi