Add libsodium to the tree and build what's needed from source.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3859 ed5197a5-7fde-0310-b194-c3ffbd925b24

deps/libsodium/test/default/siphashx24.c

@@ -0,0 +1,33 @@
+
+#define TEST_NAME "siphashx24"
+#include "cmptest.h"
+
+#define MAXLEN 64
+
+int
+main(void)
+{
+    unsigned char in[MAXLEN];
+    unsigned char out[crypto_shorthash_siphashx24_BYTES];
+    unsigned char k[crypto_shorthash_siphashx24_KEYBYTES];
+    size_t        i;
+    size_t        j;
+
+    for (i = 0; i < crypto_shorthash_siphashx24_KEYBYTES; ++i) {
+        k[i] = (unsigned char) i;
+    }
+    for (i = 0; i < MAXLEN; ++i) {
+        in[i] = (unsigned char) i;
+        crypto_shorthash_siphashx24(out, in, (unsigned long long) i, k);
+        for (j = 0; j < crypto_shorthash_siphashx24_BYTES; ++j) {
+            printf("%02x", (unsigned int) out[j]);
+        }
+        printf("\n");
+    }
+    assert(crypto_shorthash_siphashx24_KEYBYTES >= crypto_shorthash_siphash24_KEYBYTES);
+    assert(crypto_shorthash_siphashx24_BYTES > crypto_shorthash_siphash24_BYTES);
+    assert(crypto_shorthash_siphashx24_bytes() == crypto_shorthash_siphashx24_BYTES);
+    assert(crypto_shorthash_siphashx24_keybytes() == crypto_shorthash_siphashx24_KEYBYTES);
+
+    return 0;
+}