Add -passin argument to dgst command.

CHANGES

diff --git a/CHANGES b/CHANGES
index 9617f52..18b5c23 100644
--- a/CHANGES
+++ b/CHANGES
@@ -745,6 +745,9 @@
 
  Changes between 0.9.7e and 0.9.7f  [XX xxx XXXX]
 
+  *) Add new -passin argument to dgst.
+     [Steve Henson]
+
   *) Perform some character comparisons of different types in X509_NAME_cmp:
      this is needed for some certificates that reencode DNs into UTF8Strings
      (in violation of RFC3280) and can't or wont issue name rollover