Integrating http://code.google.com/p/gnupg-ecc/source/detail?r=15 .

The following works:
   gpg2 --gen-key (ECC)
   gpg2 --list-keys
   gpg2 --list-packets ~/.gnupg/pubring.gpg
   gpg2 --list-packets <private key from http://sites.google.com/site/brainhub/pgpecckeys>

ECDH doesn't work yet as the code must be re-written to adjust for gpg-agent refactoring.

configure.ac

@@ -24,7 +24,7 @@ min_automake_version="1.10"
 # Remember to change the version number immediately *after* a release.
 # Set my_issvn to "yes" for non-released code.  Remember to run an
 # "svn up" and "autogen.sh" right before creating a distribution.
-m4_define([my_version], [2.1.0])
+m4_define([my_version], [2.2.0])
 m4_define([my_issvn], [yes])
 
 m4_define([svn_revision], m4_esyscmd([printf "%d" $(svn info 2>/dev/null \
@@ -43,7 +43,7 @@ development_version=no
 NEED_GPG_ERROR_VERSION=1.8
 
 NEED_LIBGCRYPT_API=1
-NEED_LIBGCRYPT_VERSION=1.4.0
+NEED_LIBGCRYPT_VERSION=1.6.0
 
 NEED_LIBASSUAN_API=2
 NEED_LIBASSUAN_VERSION=2.0.0
@@ -1466,7 +1466,7 @@ AC_ARG_ENABLE(optimization,
    AC_HELP_STRING([--disable-optimization],
                   [disable compiler optimization]),
                   [if test $enableval = no ; then
-                      CFLAGS=`echo $CFLAGS | sed s/-O[[1-9]]\ /-O0\ /g`
+                      CFLAGS=`echo $CFLAGS | sed s%-O[[1-9]]%-O0\ %g`
                    fi])
 
 #