Rephrase Synopsis and Description fields in curry-frontend.cabal

With the curry-frontend Debian package, I currently ship this additional patch. Please consider applying upstream. Reasoning given below.

Description: Improve .cabal file's Synopsis: and Description fields.
Author: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Abstract:
 Shorten Synopsis: limit field to something clearly below 78 chars.
 .
 Drop dead (404) URL from Description: field and rephrase slightly.

--- a/curry-frontend.cabal
+++ b/curry-frontend.cabal
@@ -1,16 +1,14 @@
 Name:          curry-frontend
 Version:       0.4.2
 Cabal-Version: >= 1.10
-Synopsis:      Compile the functional logic language Curry to several
-               intermediate formats
-Description:   The Curry Frontend consists of the executable program "curry-frontend".
-               It is used by various backends to compile Curry programs to
-               an intermediate representation.
-               The code is a stripped-down version of an early version of
-               the Muenster Curry Compiler
-               (<http://danae.uni-muenster.de/curry/>)
-               which has been extended to produce different intermediate
-               representations.
+Synopsis:      Lexer, parser, type checker, etc. for the Curry language
+Description:   The Curry Frontend consists of the executable program
+               "curry-frontend". It is used by various backends to
+               compile programs written in the functional logic language
+               Curry to various intermediate representations.
+               .
+               For further information, please check
+               http://currry-language.org
 Category:      Language
 License:       BSD-3-clause
 License-File:  LICENSE