Fix version documentation.

Specify -f is for compilation flags. Add -d to synopsis section.

Closes #77.

CHANGES

diff --git a/CHANGES b/CHANGES
index b9cd499..d5142be 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,10 @@
 
  Changes between 1.0.2 and 1.1.0  [xx XXX xxxx]
 
+  *) Harmonize version and its documentation. -f flag is used to display
+     compilation flags.
+     [mancha <mancha1@zoho.com>]
+
   *) Fix eckey_priv_encode so it immediately returns an error upon a failure
      in i2d_ECPrivateKey.
      [mancha <mancha1@zoho.com>]

doc/apps/version.pod

diff --git a/doc/apps/version.pod b/doc/apps/version.pod
index e00324c..58f543b 100644
--- a/doc/apps/version.pod
+++ b/doc/apps/version.pod
@@ -13,6 +13,7 @@
 [B<-o>]
 [B<-f>]
 [B<-p>]
+[B<-d>]
 
 =head1 DESCRIPTION
 
@@ -38,7 +39,7 @@
 
 option information: various options set when the library was built.
 
-=item B<-c>
+=item B<-f>
 
 compilation flags.