Taken from Fedora, disable the lock elision run time check if it's not enabled
at build time.

--- sysdeps/unix/sysv/linux/x86/elision-conf.c	2014-09-27 00:25:46.443462345 -0400
+++ sysdeps/unix/sysv/linux/x86/elision-conf.c	2014-09-27 00:29:53.586615813 -0400
@@ -62,12 +62,16 @@
 	      char **argv  __attribute__ ((unused)),
 	      char **environ)
 {
-  __elision_available = HAS_RTM;
 #ifdef ENABLE_LOCK_ELISION
+  __elision_available = HAS_RTM;
   __pthread_force_elision = __libc_enable_secure ? 0 : __elision_available;
-#endif
   if (!HAS_RTM)
     __elision_aconf.retry_try_xbegin = 0; /* Disable elision on rwlocks */
+#else
+  __elision_available = 0;
+  __pthread_force_elision = 0;
+  __elision_aconf.retry_try_xbegin = 0;
+#endif
 }
 
 #ifdef SHARED