unison: fixed build (see note about the unison status!)

Note:

Unison is no longer under active development as a research project. (Our
research efforts in this area are now focused on a follow-on project called
Harmony. At this point, there is no one whose job it is to maintain Unison, fix
bugs, or answer questions.

However, the original developers are all still using Unison daily. It will
continue to be maintained and supported for the foreseeable future, and we will
occasionally release new versions with bug fixes, improvements (sometimes large
ones), and contributed patches.

more infos: http://www.cis.upenn.edu/~bcpierce/unison/status.html

filesystem/unison/unison.conf

@@ -3,7 +3,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../unison/unison.conf
-# Copyright (C) 2008 The OpenSDE Project
+# Copyright (C) 2008 - 2011 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 #
@@ -15,13 +15,13 @@
 # GNU General Public License can be found in the file COPYING.
 # --- SDE-COPYRIGHT-NOTE-END ---
 
-unison_pm()
-{
-    $MAKE
-    cp -v unison $bindir
-}
-
 runconf=0
+
+# we need to generate 'mkProjectInfo' but unfortunately
+# the make target for it is not working
+hook_add preconf 5 'ocamlc -o mkProjectInfo unix.cma str.cma mkProjectInfo.ml'
+
+makeopt="UISTYLE='text'"
 makeinstopt=
 
-hook_add postmake 8 "unison_pm"
+hook_add postmake 8 "cp -v unison $bindir"