Add "--encoding utf8" option to the Mercurial "hg log" command in order to get utf8 encoded commit logs (#834).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1256 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/scm/adapters/mercurial_adapter.rb

@@ -70,7 +70,7 @@ module Redmine
           
         def revisions(path=nil, identifier_from=nil, identifier_to=nil, options={})
           revisions = Revisions.new
-          cmd = "#{HG_BIN} -v -R #{target('')} log"
+          cmd = "#{HG_BIN} -v --encoding utf8 -R #{target('')} log"
           if identifier_from && identifier_to
             cmd << " -r #{identifier_from.to_i}:#{identifier_to.to_i}"
           elsif identifier_from