Add corpora for fuzzers with fuzzer mode disabled.

Fuzzer mode explores the handshake, but at the cost of losing coverage
on the record layer. Add a separate build flag and client/server
corpora for this mode.

Note this requires tweaks in consumers' fuzzer build definitions.

BUG=111

Change-Id: I1026dc7301645e165a761068a1daad6eedc9271e
Reviewed-on: https://boringssl-review.googlesource.com/12108
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/crypto/rand/rand.c b/crypto/rand/rand.c
index b73bc3c..ec78a2e 100644
--- a/crypto/rand/rand.c
+++ b/crypto/rand/rand.c
@@ -73,7 +73,7 @@
 }
 
 #if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM) && \
-    !defined(BORINGSSL_UNSAFE_FUZZER_MODE)
+    !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE)
 
 /* These functions are defined in asm/rdrand-x86_64.pl */
 extern int CRYPTO_rdrand(uint8_t out[8]);