Various patches to improve build time.

commit e07eca6a72d21a5a37ba33df7b126609db048c41
Author: Florian Weimer <fweimer@redhat.com>
Date:   Wed Aug 17 16:14:02 2016 +0200

    nptl/tst-once5: Reduce time to expected failure
    
    (cherry picked from commit 1f645571d2db9008b3cd3d5acb9ff93357864283)

diff --git a/nptl/tst-once5.cc b/nptl/tst-once5.cc
index 60bc78a..a6985b0 100644
--- a/nptl/tst-once5.cc
+++ b/nptl/tst-once5.cc
@@ -76,5 +76,7 @@ do_test (void)
   return result;
 }
 
+// The test currently hangs and is XFAILed.  Reduce the timeout.
+#define TIMEOUT 1
 #define TEST_FUNCTION do_test ()
 #include "../test-skeleton.c"