* changed version to 2.3.1

git-svn-id: branches/fpc_2_3@6505 -

compiler/version.pas

@@ -29,7 +29,7 @@ interface
        { version string }
        version_nr = '2';
        release_nr = '3';
-       patch_nr   = '0';
+       patch_nr   = '1';
        minorpatch = '';
 
        { word version for ppu file }