uCLibc does not define RTLD_NOLOAD.

[Gustavo: update for nss 3.16.1]
Signed-off-by: Will Newton <will.newton@imgtec.com>

diff -Nura nss-3.16.1.orig/nss/lib/freebl/stubs.c nss-3.16.1/nss/lib/freebl/stubs.c
--- nss-3.16.1.orig/nss/lib/freebl/stubs.c	2014-06-18 10:34:30.529997002 -0300
+++ nss-3.16.1/nss/lib/freebl/stubs.c	2014-06-18 10:36:25.508882650 -0300
@@ -594,6 +594,11 @@
     return SECSuccess;
 }
 
+/* uClibc does not define RTLD_NOLOAD. */
+#ifndef RTLD_NOLOAD
+#define RTLD_NOLOAD 0
+#endif
+
 /*
  * fetch the library if it's loaded. For NSS it should already be loaded
  */