change SSL3_CK_EDH_* to SSL_CK_DHE_* (with backward-compatibility)

This change normalizes the SSL_CK_DHE_ #defines to use the common term
"DHE", while permitting older code that uses the more uncommon "EDH"
constants to compile properly.
diff --git a/ssl/s3_lib.c b/ssl/s3_lib.c
index ef7a5d7..2f822bd 100644
--- a/ssl/s3_lib.c
+++ b/ssl/s3_lib.c
@@ -429,7 +429,7 @@
 	{
 	1,
 	SSL3_TXT_EDH_DSS_DES_40_CBC_SHA,
-	SSL3_CK_EDH_DSS_DES_40_CBC_SHA,
+	SSL3_CK_DHE_DSS_DES_40_CBC_SHA,
 	SSL_kDHE,
 	SSL_aDSS,
 	SSL_DES,
@@ -445,7 +445,7 @@
 	{
 	1,
 	SSL3_TXT_EDH_DSS_DES_64_CBC_SHA,
-	SSL3_CK_EDH_DSS_DES_64_CBC_SHA,
+	SSL3_CK_DHE_DSS_DES_64_CBC_SHA,
 	SSL_kDHE,
 	SSL_aDSS,
 	SSL_DES,
@@ -461,7 +461,7 @@
 	{
 	1,
 	SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA,
-	SSL3_CK_EDH_DSS_DES_192_CBC3_SHA,
+	SSL3_CK_DHE_DSS_DES_192_CBC3_SHA,
 	SSL_kDHE,
 	SSL_aDSS,
 	SSL_3DES,
@@ -477,7 +477,7 @@
 	{
 	1,
 	SSL3_TXT_EDH_RSA_DES_40_CBC_SHA,
-	SSL3_CK_EDH_RSA_DES_40_CBC_SHA,
+	SSL3_CK_DHE_RSA_DES_40_CBC_SHA,
 	SSL_kDHE,
 	SSL_aRSA,
 	SSL_DES,
@@ -493,7 +493,7 @@
 	{
 	1,
 	SSL3_TXT_EDH_RSA_DES_64_CBC_SHA,
-	SSL3_CK_EDH_RSA_DES_64_CBC_SHA,
+	SSL3_CK_DHE_RSA_DES_64_CBC_SHA,
 	SSL_kDHE,
 	SSL_aRSA,
 	SSL_DES,
@@ -509,7 +509,7 @@
 	{
 	1,
 	SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA,
-	SSL3_CK_EDH_RSA_DES_192_CBC3_SHA,
+	SSL3_CK_DHE_RSA_DES_192_CBC3_SHA,
 	SSL_kDHE,
 	SSL_aRSA,
 	SSL_3DES,