Fix updater test behavior with Ruby 1.9.x

The behavior of FileUtils.cp w.r.t. preserving the source file
mode changed between Ruby 1.8 and Ruby 1.9, in particular the execute
permission was not preserved for copied binaries so the test script
failed to launch them.

Set the :preserve attribute so that the source file's mode is
used.

MD-19678 #time 1h

src/tests/test-update.rb

@@ -117,6 +117,12 @@ OptionParser.new do |parser|
 	end
 end.parse!
 
+# copy 'src' to 'dest', preserving the attributes
+# of 'src'
+def copy_file(src, dest)
+	FileUtils.cp src, dest, :preserve => true
+end
+
 # Remove the install and package dirs if they
 # already exist
 FileUtils.rm_rf(INSTALL_DIR)
@@ -125,7 +131,7 @@ FileUtils.rm_rf(PACKAGE_SRC_DIR)
 
 # Create the install directory with the old app
 Dir.mkdir(INSTALL_DIR)
-FileUtils.cp(OLDAPP_NAME,"#{INSTALL_DIR}/#{APP_NAME}")
+copy_file OLDAPP_NAME, "#{INSTALL_DIR}/#{APP_NAME}"
 
 # Create a dummy file to uninstall
 uninstall_test_file = create_test_file("#{INSTALL_DIR}/file-to-uninstall.txt", "this file should be removed after the update")
@@ -146,7 +152,7 @@ File.open(nested_dir_test_file,'w') do |file|
 	file.puts "this is a new file in a new nested dir"
 end
 FileUtils::chmod 0644, nested_dir_test_file
-FileUtils.cp(NEWAPP_NAME,"#{PACKAGE_SRC_DIR}/#{APP_NAME}")
+copy_file NEWAPP_NAME, "#{PACKAGE_SRC_DIR}/#{APP_NAME}"
 FileUtils::chmod 0755, "#{PACKAGE_SRC_DIR}/#{APP_NAME}"
 
 # Create .zip packages from source files
@@ -160,7 +166,7 @@ end
 # Copy the install script and updater to the target
 # directory
 replace_vars("file_list.xml","#{PACKAGE_DIR}/file_list.xml",file_list_vars)
-FileUtils.cp("../#{UPDATER_NAME}","#{PACKAGE_DIR}/#{UPDATER_NAME}")
+copy_file "../#{UPDATER_NAME}", "#{PACKAGE_DIR}/#{UPDATER_NAME}"
 
 # Run the updater using the new syntax
 #