The native version of expat may be used on older systems which dont have glibc 2.25
and hence don't have getrandom() thanks to uninative. Disable the libc call and
use the syscall instead to avoid a compatibility issue until we have 2.25 everywhere
we support with uninative.

RP
2017/8/14

Upstream-Status: Inappropriate

Index: expat-2.2.3/configure.ac
===================================================================
--- expat-2.2.3.orig/configure.ac
+++ expat-2.2.3/configure.ac
@@ -151,7 +151,7 @@ AC_LINK_IFELSE([AC_LANG_SOURCE([
   #include <stdlib.h>  /* for NULL */
   #include <sys/random.h>
   int main() {
-    return getrandom(NULL, 0U, 0U);
+    return getrandomBREAKME(NULL, 0U, 0U);
   }
 ])], [
     AC_DEFINE([HAVE_GETRANDOM], [1],