Update util/ck_errf.pl script, and have it run automatically
during "make errors" and thus during "make update".

Fix lots of bugs that util/ck_errf.pl can detect automatically.
Various others of these are still left to fix; that's why
"make update" will complain loudly when run now.
diff --git a/ssl/s3_pkt.c b/ssl/s3_pkt.c
index a24cec2..f90bb77 100644
--- a/ssl/s3_pkt.c
+++ b/ssl/s3_pkt.c
@@ -1091,7 +1091,7 @@
 		if (s->s3->tmp.new_cipher == NULL)
 			{
 			al=SSL_AD_UNEXPECTED_MESSAGE;
-			SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_CCS_RECEIVED_EARLY);
+			SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_CCS_RECEIVED_EARLY);
 			goto f_err;
 			}