nail: add compatibility with openssl 1.1

Openssl 1.1 doesn't support SSL2 and does not define the OPENSSL_NO_SSL2
flag either.  Also, it defaults to NO_EGD, so do not use EGD if it's not
enabled in openssl.

Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>

mail/nail/patches/200-handle-openssl-no-egd.patch

@@ -0,0 +1,14 @@
+--- a/openssl.c
++++ b/openssl.c
+@@ -137,7 +137,11 @@ ssl_rand_init(void)
+ 
+ 	if ((cp = value("ssl-rand-egd")) != NULL) {
+ 		cp = expand(cp);
++#ifndef OPENSSL_NO_EGD
+ 		if (RAND_egd(cp) == -1) {
++#else
++		if (1) {
++#endif
+ 			fprintf(stderr, catgets(catd, CATSET, 245,
+ 				"entropy daemon at \"%s\" not available\n"),
+ 					cp);