Fix build on non GLIBC platforms (FreeBSD at least)

Build was broken by commit 9666529b5a

I'm not certain that this is entirely the correct fix since the demo
from bug #23774 seemed to work before the commit that broke the build.

Signed-off-by: Robert Noland <rnoland@2hip.net>
Signed-off-by: Brian Paul <brianp@vmware.com>

src/glx/x11/glxhash.c

@@ -88,6 +88,12 @@
 
 #define HASH_ALLOC malloc
 #define HASH_FREE  free
+#ifndef __GLIBC__
+#define HASH_RANDOM_DECL	char *ps, rs[256]
+#define HASH_RANDOM_INIT(seed)	ps = initstate(seed, rs, sizeof(rs))
+#define HASH_RANDOM		random()
+#define HASH_RANDOM_DESTROY	setstate(ps)
+#else
 #define HASH_RANDOM_DECL	struct random_data rd; int32_t rv; char rs[256]
 #define HASH_RANDOM_INIT(seed)					\
    do {								\
@@ -96,6 +102,7 @@
    } while(0)
 #define HASH_RANDOM             ((void) random_r(&rd, &rv), rv)
 #define HASH_RANDOM_DESTROY
+#endif
 
 typedef struct __glxHashBucket
 {