Mark move from ecc.h to ecc-internal.h done.

misc/plan.html

@@ -14,7 +14,7 @@
   <h1> Nettle release plans </h1>
   <p> This is an attempt at defining a development target for
     Nettle-3.1, inspired by similar pages for recent GMP releases.
-    [Last updated 2015-01-26]</p>
+    [Last updated 2015-01-27]</p>
   <p class='should'>
     This really ought to be done before release
   </p>
@@ -31,7 +31,7 @@
   <h1> Plans for nettle-3.1 </h1>
 
   <h2> Interface changes </h2>
-  <p class='should'>
+  <p class='done'>
     Review public functions in ecc.h, move some to ecc-internal.h, to
     enable sane support for other types of curves.
   </p>