Rename {ssl,ctx}->{min,max}_version.

These are not the true version filters due to SSL_OP_NO_* filters.

Change-Id: I4c2db967d885f7c1875a3e052c5b02ea8d612fe1
Reviewed-on: https://boringssl-review.googlesource.com/17266
Reviewed-by: Steven Valdez <svaldez@google.com>
diff --git a/include/openssl/ssl.h b/include/openssl/ssl.h
index 285b85c..52056ef 100644
--- a/include/openssl/ssl.h
+++ b/include/openssl/ssl.h
@@ -4079,13 +4079,15 @@
   /* lock is used to protect various operations on this object. */
   CRYPTO_MUTEX lock;
 
-  /* max_version is the maximum acceptable protocol version. Note this version
-   * is normalized in DTLS. */
-  uint16_t max_version;
+  /* conf_max_version is the maximum acceptable protocol version configured by
+   * |SSL_CTX_set_max_proto_version|. Note this version is normalized in DTLS
+   * and is further constrainted by |SSL_OP_NO_*|. */
+  uint16_t conf_max_version;
 
-  /* min_version is the minimum acceptable protocol version. Note this version
-   * is normalized in DTLS. */
-  uint16_t min_version;
+  /* conf_min_version is the minimum acceptable protocol version configured by
+   * |SSL_CTX_set_min_proto_version|. Note this version is normalized in DTLS
+   * and is further constrainted by |SSL_OP_NO_*|. */
+  uint16_t conf_min_version;
 
   struct ssl_cipher_preference_list_st *cipher_list;