Disable SSLv2 and SSLv3 in w3m to "mitigate POODLE vulnerability".

This change will be passed upstream.

--- w3m-0.5.2/url.c.orig	2015-01-29 08:37:04.156739107 -0800
+++ w3m-0.5.2/url.c	2015-01-29 08:48:24.055383389 -0800
@@ -337,6 +337,8 @@
 		option |= SSL_OP_NO_TLSv1;
 	}
 	SSL_CTX_set_options(ssl_ctx, option);
+	/* Always disable SSLv2 & SSLv3 to "mitigate POODLE vulnerability". */
+	SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
 #ifdef USE_SSL_VERIFY
 	/* derived from openssl-0.9.5/apps/s_{client,cb}.c */
 #if 1				/* use SSL_get_verify_result() to verify cert */