Bug #13164 yassl: "SSL connection error" on several platforms

 - it's a requirement fo yaSSL that either /dev/urandom or /dev/random is available on the target system.
 - Added a fix that tries to open /dev/random if /dev/urandom is not available.

extra/yassl/taocrypt/src/random.cpp

@@ -94,8 +94,12 @@ void OS_Seed::GenerateSeed(byte* output, word32 sz)
 OS_Seed::OS_Seed() 
 {
     fd_ = open("/dev/urandom",O_RDONLY);
+    if (fd_ == -1)
+    {
+      fd_ = open("/dev/random",O_RDONLY);
       if (fd_ == -1)
         error_.SetError(OPEN_RAN_E);
+    }
 }