remove svn tag in configure.in.in and update release date in README

(Old svn revision: 5045)

README

@@ -2,7 +2,7 @@
 xfburn
 ------
 
-Version 0.3.1, 2008-07-xx
+Version 0.3.1, 2008-07-10
 
 http://www.xfce.org/projects/xfburn/
 

configure.in.in

@@ -5,7 +5,7 @@ m4_define([xfburn_version_major], [0])
 m4_define([xfburn_version_minor], [3])
 m4_define([xfburn_version_micro], [1])
 m4_define([xfburn_version_build], [@REVISION@])
-m4_define([xfburn_version_tag], [svn])
+m4_define([xfburn_version_tag], [])
 m4_define([xfburn_version], [xfburn_version_major().xfburn_version_minor().xfburn_version_micro()ifelse(xfburn_version_tag(), [svn], [xfburn_version_tag()-xfburn_version_build()], [xfburn_version_tag()])])
 
 dnl Initialize autoconf