Fix a couple bugs.

lib/kgrader/backend/svn.rb

@@ -51,8 +51,7 @@ module KGrader::Backend
     end
 
     def commit(repo, message, paths = nil)
-      # TODO
-      # run 'commit', '-m', message, *paths.map { |fn| File.join repo, fn }
+      run 'commit', '-m', message, *paths.map { |fn| File.join repo, fn }
     end
 
     def commit_date(repo)

lib/kgrader/runtime.rb

@@ -1,3 +1,4 @@
+require 'fileutils'
 require 'timeout'
 
 module KGrader
@@ -5,7 +6,7 @@ module KGrader
     MAX_COLS = 79
 
     def testcase(options)
-      puts " running test: #{$0} ".center MAX_COLS, '='
+      puts " running test: #{File.basename $0} ".center MAX_COLS, '='
       begin
         Timeout::timeout options[:alarm] { yield }
       rescue Timeout::Error